{"id":8610,"date":"2026-09-15T10:11:29","date_gmt":"2026-09-15T08:11:29","guid":{"rendered":"https:\/\/www.separ.de\/?p=8610"},"modified":"2026-09-18T10:16:44","modified_gmt":"2026-09-18T08:16:44","slug":"water-in-diesel","status":"publish","type":"post","link":"https:\/\/www.separ.de\/en\/knowledge\/water-in-diesel\/","title":{"rendered":"Water in Diesel"},"content":{"rendered":"\t\t
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Water in Diesel<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tRequest contact now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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AI Generated<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Causes, damage and the right filter solutions for your\ncustomers<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Water in fuel is one of the most common, most costly and easiest-to-preventcauses of engine failure in diesel engines. For dealers, installers and system integrators who want to offer their customers complete engine protection, sound knowledge of this topic is essential\u2014both for consulting and for choosing the right products.

This article explains how water gets into the fuel circuit, which damage mechanisms it triggers, and which SEPAR filter solution is the right choice for which application for yourcustomers.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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How water gets into the fuel<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Water in the fuel system is not an isolated case\u2014it is a systematic load that almost all diesel engines are exposed to. The sources of ingress vary depending on application and operating location, but their effect is identical: water enters the injection system and causes damage there. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Condensation in Fuel Tanks<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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The most common ingress mechanism is condensation. Tanks that are not completely filled contain an air cushion. When temperatures fluctuate, thehumidity in that air condenses on the cool inner tank wall and collects at the bottom. Machines with long downtimes are particularly affected: generators, seasonal vehicles, depot locomotives and ships in port. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Contamination via the fuel supply chain<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Water ingress also occurs during bunkering or refuelling\u2014from poorly maintained storage tanks, bunker boats or tank trucks. Standard-compliant fuel qualities to ISO 8217 or EN 590 limit the permissible water content, but in practice deviations are not uncommon. For your customers in shipping, commercial vehicles or agriculture, this is a real, recurring risk. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Hygroscopic fuels: biodiesel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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As alternative fuels become more widespread, the water risk continues to grow. HVO and biodiesel blends are significantly more hygroscopic than conventional mineral diesel\u2014they actively bind water from the ambient air. For your customers who have already switched to HVO or are planning to do so, this can mean that the requirements for the filtration system increase. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Leaks and direct ingress<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Defective tank caps, damaged vent lines or old seals allow rainwater or splash water to enter directly. Older machines and vehicles operated outdoors are particularly affected\u2014typical in construction, agriculture andmarine applications. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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The 4 main sources of ingress at a glance:<\/strong><\/p>

  • Condensation due to temperature fluctuations\u2014especially during long downtimes<\/p><\/li>

  • Contaminated fuel deliveries from poorly maintained storage systems<\/p><\/li>

  • Hygroscopic biofuels (FAME, B7+) with active water absorption<\/p><\/li>

  • Defective seals, tank caps and vent lines on older machines<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    What water does in the injection system<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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    Free and emulsified water in fuel is not a harmless contamination. It sets a cascade of damage mechanisms in motion that, in extreme cases, can mean complete engine failure. For your customers\u2014whether farmer, shipowner or infrastructure operator\u2014this is a question of operational reliability and operating costs. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Corrosion on precision components<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    Water can promote corrosion processes on metallic components of the fuel and injection system. Sensitive precision components in particular can be impaired in function and service life as a result. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Cavitation due to water evaporation<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    When pressure drops or temperatures rise in the injection system, water evaporates explosively. The resulting vapour bubbles implode when higher pressures are reached again and cause cavitation damage to metal surfaces. Modern high-pressure injection systems with system pressures above 1,500 bar are particularly affected\u2014repair costs can be significant. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Microbiological Growth<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    The boundary layer between the water and fuel phases creates ideal living conditions for bacteria and fungi, especially the so-called diesel fungus (Hormoconis resinae). It forms tough biomass that clogs filters, as well as organic acids that cause further corrosion and seal damage. For customers with long tank dwell times\u2014generator operators, seasonal machine pools\u2014this is particularly relevant. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Fuel quality deterioration<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    Water accelerates the oxidation of fuel components and promotes the formation of resin compounds and sediments. These clog filter elements prematurely and can partially block injection nozzles\u2014with direct consequences for engine performance, fuel consumption andemissions. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Many complaints about supposedly defective injection systems or prematurely worn filter elements have one common cause\u2014water in the fuel. Anyone who recommends a reliable water separator to their customers sustainably reduces complaints, service call-outs and warranty issues. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Which SEPAR system protects which application?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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    SEPAR offers different fuel filter systems for different applications and requirements. Selecting the right system depends, among other things, on the application, fuel system, required flow rate, installation situation and the respective operating conditions. The following overview provides an initial look at possible areas of use for the various SEPAR systems. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t\tSEPAR Anwendungs\u00fcbersicht<\/title><style>.separ-tabelle-wrapper {\n width: 100%;\n overflow-x: auto;\n font-size: 16px;\n line-height: 1.5;\n border: 1px solid #003087;\n }\n\n .separ-tabelle {\n width: 100%;\n border-collapse: collapse;\n border-spacing: 0;\n }\n\n .separ-tabelle thead tr {\n background-color: #003087;\n }\n\n .separ-tabelle thead th {\n color: #ffffff;\n font-weight: 700;\n padding: 12px 16px;\n text-align: left;\n border: 1px solid #2a4f7a;\n white-space: nowrap;\n }\n\n .separ-tabelle tbody tr:nth-child(odd) {\n background-color: #f0f4f8;\n }\n\n .separ-tabelle tbody tr:nth-child(even) {\n background-color: #ffffff;\n }\n\n .separ-tabelle tbody tr:hover {\n background-color: #dce8f5;\n transition: background-color 0.2s ease;\n }\n\n .separ-tabelle tbody td {\n padding: 11px 16px;\n border: 1px solid #c8d8e8;\n color: #1a2a3a;\n vertical-align: top;\n }\n\n .separ-tabelle tbody td:first-child {\n font-weight: 700;\n color: #1a3a5c;\n }\n\n .separ-system {\n color: #c0392b;\n font-weight: 700;\n }\n<\/style><\/head><body><div class=\"separ-tabelle-wrapper\"><table class=\"separ-tabelle\"><thead><tr><th>Anwendung Ihres Kunden<\/th><th>Empfohlenes SEPAR-System<\/th><th>Optionales Zubeh\u00f6r<\/th><\/tr><\/thead><tbody><tr><td>Traktoren & Landmaschinen<\/td><td><span class=\"separ-system\">LKF-Automotive \/ LKF-Industrial \/ LKF-Automotive HD \/ SWK \/ EVO<\/span><\/td><td>WSA, LKH, HFP<\/td><\/tr><tr><td>LKW & Nutzfahrzeuge<\/td><td><span class=\"separ-system\">LKF-Automotive \/ LKF-Automotive HD \/ LKF-Industrial \/ SWK \/ EVO<\/span><\/td><td>WSA, LKH, HFP<\/td><\/tr><tr><td>Generatoren & Notstrom<\/td><td><span class=\"separ-system\">LKF-Automotive \/ LKF-Automotive HD \/ LKF-Industrial \/ SWK \/ EVO<\/span><\/td><td>WSA, LKH, HFP<\/td><\/tr><tr><td>Baumaschinen & Off-Highway<\/td><td><span class=\"separ-system\">LKF-Automotive \/ LKF-Automotive HD \/ LKF-Industrial \/ SWK \/ EVO<\/span><\/td><td>WSA, LKH, HFP<\/td><\/tr><tr><td>Diesellokomotiven & Schiene<\/td><td><span class=\"separ-system\">SWK \/ SWK Doppelsystem<\/span><\/td><td>WSA, HFP<\/td><\/tr><tr><td>Schiffe & Marine (kommerziell)<\/td><td><span class=\"separ-system\">SWK \/ SWK Doppelsystem<\/span><\/td><td>WSA<\/td><\/tr><\/tbody><\/table><\/div><\/body><\/html>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e91837 e-flex e-con-boxed e-con e-parent\" data-id=\"1e91837\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-0573194 e-con-full e-flex e-con e-child\" data-id=\"0573194\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a1e8c7 elementor-widget elementor-widget-heading\" data-id=\"2a1e8c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Free vs. emulsified water: what your customer should know<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4876941 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"4876941\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">In practice, three forms of water occur in fuel, which place different requirements on the filtration system:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-035093c elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"035093c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\"><strong>Free water<\/strong><\/p><p class=\"p2\">Free water settles as a visible phase at the bottom of the tank and can be seen with the naked eye or through the transparent bowl of a SEPAR filter. It is mainly caused by condensation and direct ingress. The SEPAR SWK separates free water with a separation efficiency of 99%. <br><br><\/p><p class=\"p1\"><strong>Emulsified water<\/strong><\/p><p class=\"p2\">Emulsified water is finely dispersed in the fuel and can be recognized as a cloudy phase. It is caused by mechanical effects (vibrations, pump pressures). SEPAR LKF systems with the coalescing principle separate both free and emulsified water with an overall separation efficiency of over 95%. <\/p><p class=\"p1\"><strong><br>Dissolved water<\/strong><\/p><p class=\"p4\">This is not critical as long as it does not precipitate out of the diesel as free water due to temperature fluctuations or exceeding the saturation limit.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-765ef90 e-con-full e-flex e-con e-child\" data-id=\"765ef90\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3dc1870 elementor-widget elementor-widget-image\" data-id=\"3dc1870\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-1024x1024.jpg\" class=\"attachment-large size-large wp-image-8690\" alt=\"\" srcset=\"https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-1024x1024.jpg 1024w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-300x300.jpg 300w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-150x150.jpg 150w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-768x768.jpg 768w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-1536x1536.jpg 1536w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/3-Glaeser-DW-AI-2048x2048.jpg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8abbf2b e-flex e-con-boxed elementor-invisible e-con e-parent\" data-id=\"8abbf2b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{"animation":"fadeInUp"}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d73e34f e-con-full e-flex e-con e-child\" data-id=\"d73e34f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{"background_background":"classic"}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a62d305 elementor-widget elementor-widget-text-editor\" data-id=\"a62d305\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Selection criteria: The appropriate SEPAR system should be selected based on the specific application and technical requirements. Key factors include the required flow rate, installation situation, operating conditions and, where applicable, existing approval or<br\/>classification requirements. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a68f90c e-flex e-con-boxed e-con e-parent\" data-id=\"a68f90c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-ddf3e5f e-con-full e-flex e-con e-child\" data-id=\"ddf3e5f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6ca3db elementor-widget elementor-widget-heading\" data-id=\"d6ca3db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Optional accessories: more protection, less service effort<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0484d26 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"0484d26\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In addition to the main filter systems, SEPAR offers accessories that increase protection and minimize maintenance effort for your customers:<br><br><\/p><ul><li>SEPAR WSA (Water Sensing Alarm): Optional sensor that detects water in the fuel at an early stage and outputs a signal\u2014retrofit for all SEPAR systems. Ideal for machines that are not checked daily. <\/li><li>SEPAR HFP (manual priming pump): Bleeds the fuel system easily and without tools after a filter change. Reduces starting problems after maintenance and protects the engine from cranking attempts with air pockets. <\/li><li>SEPAR LKH (fuel heater): Prevents paraffin-related filter clogging in winter.<br\/>Can be combined with LKF, SWK and EVO systems, retrofit as a standalone component. An integrated heater is also available for certain SWK versions. <\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5758cc6 e-con-full e-flex e-con e-child\" data-id=\"5758cc6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0f650a0 elementor-widget elementor-widget-image\" data-id=\"0f650a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"798\" src=\"https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-1024x1021.jpg\" class=\"attachment-large size-large wp-image-8691\" alt=\"\" srcset=\"https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-1024x1021.jpg 1024w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-300x300.jpg 300w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-150x150.jpg 150w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-768x766.jpg 768w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-1536x1532.jpg 1536w, https:\/\/www.separ.de\/wp-content\/uploads\/2026\/09\/Zubehoerprodukte-auf-Tisch-AI-2048x2042.jpg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-59a36c0 e-flex e-con-boxed e-con e-parent\" data-id=\"59a36c0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6628f27 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"6628f27\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which SEPAR system protects which application?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a9d2cd elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"0a9d2cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>SEPAR offers different fuel filter systems for different applications and requirements. Selecting the right system depends, among other things, on the application, fuel system, required flow rate, installation situation and the respective operating conditions. The following overview provides an initial look at possible areas of use for the various SEPAR systems. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cef614c elementor-widget__width-initial elementor-widget elementor-widget-html\" data-id=\"cef614c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!DOCTYPE html><html lang=\"de\"><head><meta charset=\"UTF-8\"><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"><title>SEPAR Vergleichstabelle<\/title><style>.separ-tabelle-wrapper {\n width: 100%;\n overflow-x: auto;\n font-size: 16px;\n line-height: 1.5;\n border: 1px solid #003087;\n }\n\n .separ-tabelle {\n width: 100%;\n border-collapse: collapse;\n border-spacing: 0;\n }\n\n .separ-tabelle thead tr {\n background-color: #003087;\n }\n\n .separ-tabelle thead th:last-child {\n background-color: #d9531e;\n }\n\n .separ-tabelle thead th {\n color: #ffffff;\n font-weight: 700;\n padding: 12px 16px;\n text-align: left;\n border: 1px solid #2a4f7a;\n }\n\n .separ-tabelle tbody tr:nth-child(odd) {\n background-color: #f0f4f8;\n }\n\n .separ-tabelle tbody tr:nth-child(even) {\n background-color: #ffffff;\n }\n\n .separ-tabelle tbody tr:hover {\n background-color: #dce8f5;\n transition: background-color 0.2s ease;\n }\n\n .separ-tabelle tbody td {\n padding: 11px 16px;\n border: 1px solid #c8d8e8;\n color: #1a2a3a;\n vertical-align: top;\n }\n\n .separ-tabelle tbody td:last-child {\n font-weight: 700;\n color: #1a3a5c;\n }\n<\/style><\/head><body><div class=\"separ-tabelle-wrapper\"><table class=\"separ-tabelle\"><thead><tr><th>Ohne SEPAR-Filtration<\/th><th>Mit SEPAR-Filtration<\/th><\/tr><\/thead><tbody><tr><td>Korrosionssch\u00e4den an Einspritzsystem: hohe Reparaturkosten<\/td><td>Wasser wird abgeschieden, bevor es Schaden anrichten kann<\/td><\/tr><tr><td>Vorzeitig verschlei\u00dfende Hauptfilter durch Wasser- und Partikelbelastung<\/td><td>L\u00e4ngere Filterstandzeiten durch sauberen Kraftstoffeintrag<\/td><\/tr><tr><td>Ungeplante Stillstandzeiten durch Motorausfall<\/td><td>Zuverl\u00e4ssiger Betrieb auch bei schwankender Kraftstoffqualit\u00e4t<\/td><\/tr><tr><td>Mikrobiologische Verkeimung im Tank: aufw\u00e4ndige Reinigung<\/td><td>Fr\u00fchzeitige Wasserabscheidung verhindert Keim-N\u00e4hrboden<\/td><\/tr><tr><td>H\u00f6herer Kraftstoffverbrauch und Emissionen durch Ablagerungen<\/td><td>Saubere Einspritzd\u00fcsen, optimale Verbrennung<\/td><\/tr><\/tbody><\/table><\/div><\/body><\/html>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e315b62 e-flex e-con-boxed e-con e-parent\" data-id=\"e315b62\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79c0dd8 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"79c0dd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion: Water protection is not an accessory\u2014it is basic protection<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1274ad elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"b1274ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Water in fuel is not a rare special problem, but an ever-present load for every diesel engine in every industry. As a dealer, installer or system integrator, you can offer your customers the most effective engine protection by positioning fuel filtration not as optional accessories, but as an integral part of every diesel system. <br><br>SEPAR offers the right solution for every application and every flow range: from the compact coalescing filtration of the LKF to the proven 5-stage filter principle of the SWK and EVO, right through to the redundant changeover system for safety-critical infrastructures. Made in Germany, HVO- and biodiesel-resistant, with optional accessories for every service need. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e70aeff e-flex e-con-boxed e-con e-parent\" data-id=\"e70aeff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d284e28 e-con-full e-flex e-con e-child\" data-id=\"d284e28\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e45f634 elementor-widget elementor-widget-text-editor\" data-id=\"e45f634\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>CONTACT<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d54f6a6 elementor-widget elementor-widget-heading\" data-id=\"d54f6a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Right SEPAR Filter for Tractors and Agricultural Machinery<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-922541c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"922541c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Our specialists will advise you on the appropriate SWK configuration for your application\u2014free of charge and without obligation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6a587d9 e-grid e-con-full e-con e-child\" data-id=\"6a587d9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-35ddd27 e-con-full e-flex e-con e-child\" data-id=\"35ddd27\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9957b84 elementor-widget elementor-widget-heading\" data-id=\"9957b84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Phone and Fax<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17b62ae elementor-widget elementor-widget-text-editor\" data-id=\"17b62ae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Tel.:<\/strong> +49 2324 9460-0<br\/><strong>Fax:<\/strong> +49 2324 40842<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9a2009e e-con-full e-flex e-con e-child\" data-id=\"9a2009e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-569763b elementor-widget elementor-widget-heading\" data-id=\"569763b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">You can find us here<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-87f826b elementor-widget elementor-widget-text-editor\" data-id=\"87f826b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Am Walzwerk 2<br\/>45527 Hattingen<br\/>Germany<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8462055 e-con-full e-flex e-con e-child\" data-id=\"8462055\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d89d4fc elementor-widget elementor-widget-heading\" data-id=\"d89d4fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">E-mail<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddd5dbd elementor-widget elementor-widget-text-editor\" data-id=\"ddd5dbd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"mailto:info@separ.de\">info@separ.de<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c86fdf3 e-con-full e-flex e-con e-child\" data-id=\"c86fdf3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dd5e7fa elementor-widget elementor-widget-heading\" data-id=\"dd5e7fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Social media<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div 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416H69V202.2h66.5V416zm-33.2-243c-21.3 0-38.5-17.3-38.5-38.5S80.9 96 102.2 96c21.2 0 38.5 17.3 38.5 38.5 0 21.3-17.2 38.5-38.5 38.5zm282.1 243h-66.4V312c0-24.8-.5-56.7-34.5-56.7-34.6 0-39.9 27-39.9 54.9V416h-66.4V202.2h63.7v29.2h.9c8.9-16.8 30.6-34.5 62.9-34.5 67.2 0 79.7 44.3 79.7 101.9V416z\"><\/path><\/svg>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c636b75 e-con-full e-flex e-con e-child\" data-id=\"c636b75\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f42cc2e e-con-full e-flex e-con e-child\" data-id=\"f42cc2e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{"background_background":"classic"}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-57d34b5 elementor-widget elementor-widget-heading\" data-id=\"57d34b5\" data-element_type=\"widget\" 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value=\"8610\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-vorname elementor-col-50 elementor-sm-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[vorname]\" id=\"form-field-vorname\" class=\"elementor-field elementor-size-sm elementor-field-textual\" placeholder=\"First name*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-nachname elementor-col-50 elementor-sm-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[nachname]\" id=\"form-field-nachname\" class=\"elementor-field elementor-size-sm elementor-field-textual\" placeholder=\"Last name*\" 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accepted.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-unternehmen elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[unternehmen]\" id=\"form-field-unternehmen\" class=\"elementor-field elementor-size-sm elementor-field-textual\" placeholder=\"Company*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-nachricht elementor-col-100 elementor-field-required\">\n\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field elementor-size-sm\" name=\"form_fields[nachricht]\" id=\"form-field-nachricht\" rows=\"4\" placeholder=\"Message*\" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-acceptance elementor-field-group elementor-column elementor-field-group-field_10e2459 elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t<div class=\"elementor-field-subgroup\">\n\t\t\t<span class=\"elementor-field-option\">\n\t\t\t\t<input type=\"checkbox\" name=\"form_fields[field_10e2459]\" id=\"form-field-field_10e2459\" class=\"elementor-field elementor-size-sm elementor-acceptance-field\" required=\"required\">\n\t\t\t\t<label for=\"form-field-field_10e2459\">By submitting this form, I confirm that I have read and accept the <a href=\"https:\/\/www.separ.de\/en\/terms-and-conditions\/\" style=\"color:#000; text-decoration: underline;\" target=\"_blank\" rel=\"noopener noreferrer\">\nTerms and Conditions\n<\/a> and the <a href=\"https:\/\/www.separ.de\/en\/data-protection\/\" style=\"color:#000; text-decoration: underline;\" target=\"_blank\" rel=\"noopener noreferrer\">\nPrivacy Policy \n<\/a>.<\/label>\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Water in fuel is one of the most common, most costly and easiest-to-prevent<br \/>\ncauses of engine failure in diesel engines. For dealers, installers and system integrators<br \/>\nwho want to offer their customers complete engine protection, sound knowledge of this<br \/>\ntopic is essential\u2014both for consulting and for choosing the right products. <\/p>\n","protected":false},"author":1,"featured_media":8653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89],"tags":[96],"class_list":["post-8610","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-ai-generated"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Water in Diesel: Causes, Damage and the Right Filter Solutions | SEPAR<\/title>\n<meta name=\"description\" content=\"Water in fuel can be a common cause of damage to diesel engines. Learn how water gets into the fuel, what effects it can have, and how SEPAR fuel filter systems help reliably protect diesel engines.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.separ.de\/en\/knowledge\/water-in-diesel\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Water in Diesel: Causes, Damage and the Right Filter Solutions | SEPAR\" \/>\n<meta property=\"og:description\" content=\"Water in fuel can be a common cause of damage to diesel engines. 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