{"id":3913,"date":"2025-12-18T09:03:15","date_gmt":"2025-12-18T09:03:15","guid":{"rendered":"https:\/\/www.filtroscastello.com\/what-is-an-engine-oil-filter-and-why-is-it-essential\/"},"modified":"2026-10-16T08:48:32","modified_gmt":"2026-10-16T08:48:32","slug":"what-is-an-engine-oil-filter-and-why-is-it-essential","status":"publish","type":"post","link":"https:\/\/www.filtroscastello.com\/en\/what-is-an-engine-oil-filter-and-why-is-it-essential\/","title":{"rendered":"What is an engine oil filter, and why is it essential?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The oil filter is one of the most important components of <a href=\"https:\/\/www.filtroscastello.com\/en\/solutions\/engine\/\">the engine&#8217;s lubrication<\/a> system. Its function is simple but critical: to trap impurities, metal particles, combustion byproducts, and any contaminants that might mix with the oil, ensuring clean and effective lubrication. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A dirty filter shortens the oil&#8217;s service life and can lead to premature wear, costly breakdowns, and even the dreaded seized engine. For these reasons, it is recommended that you replace it with every oil change. <\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of contents<\/h2><nav><ul><li class=\"\"><a href=\"#what-is-an-oil-filter-and-how-does-it-work\">What is an oil filter, and how does it work?<\/a><\/li><li class=\"\"><a href=\"#types-of-engine-oil-filters\">Types of Engine Oil Filters<\/a><\/li><li class=\"\"><a href=\"#why-is-the-engine-oil-filter-so-important\">Why Is the Engine Oil Filter So Important?<\/a><\/li><li class=\"\"><a href=\"#how-often-should-the-oil-filter-be-changed\">How often should the oil filter be changed?<\/a><\/li><li class=\"\"><a href=\"#how-to-choose-the-right-filter\">How to Choose the Right Filter<\/a><\/li><li class=\"\"><a href=\"#the-role-of-the-oil-filter-in-engine-lubrication\">The Role of the Oil Filter in Engine Lubrication<\/a><\/li><li class=\"\"><a href=\"#frequently-asked-questions-about-engine-oil-filters\">Frequently Asked Questions About Engine Oil Filters<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"what-is-an-oil-filter-and-how-does-it-work\" class=\"wp-block-heading has-large-font-size\">What is an oil filter, and how does it work?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The oil filter consists of a housing (metal or plastic) that contains a <strong>filter medium<\/strong>, typically arranged in an accordion-like pattern to increase the filtration surface area. This filter element can be made of cellulose, synthetic fibers, or advanced microfibers, depending on the type of filter and the level of filtration required. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 id=\"operating-process\" class=\"wp-block-heading has-medium-font-size\">Operating Process<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Oil is drawn from the oil pan by the oil pump.<\/li>\n\n\n\n<li>Before reaching the lubrication system, it passes through the filter.<\/li>\n\n\n\n<li>The filter media traps solid particles, metal debris, soot, dust, and combustion byproducts.<\/li>\n\n\n\n<li>The clean oil continues its journey to the critical parts of the engine: pistons, crankshaft, camshaft, turbo (if equipped), bearings, etc.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">As it operates continuously, the filter becomes saturated. When the filter media can no longer retain any more particles, the oil pressure increases and the internal bypass valve may open to allow unfiltered oil to pass through. Although this prevents immediate damage due to lack of lubrication, it also allows unfiltered oil to circulate, increasing the risk of internal wear. Therefore, replacing the filter at the recommended intervals is an essential part of engine maintenance.   <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/\u00bfQue-es-un-filtro-de-aceite-1024x768.jpg\" alt=\"What is an oil filter\" class=\"wp-image-3362\" style=\"border-top-left-radius:20px;border-top-right-radius:20px;border-bottom-left-radius:20px;border-bottom-right-radius:20px;width:600px\" srcset=\"https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/\u00bfQue-es-un-filtro-de-aceite-1024x768.jpg 1024w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/\u00bfQue-es-un-filtro-de-aceite-300x225.jpg 300w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/\u00bfQue-es-un-filtro-de-aceite-768x576.jpg 768w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/\u00bfQue-es-un-filtro-de-aceite.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"types-of-engine-oil-filters\" class=\"wp-block-heading has-large-font-size\">Types of Engine Oil Filters<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are several types of filters, classified by their construction, filter material, or the system they use to remove impurities. Each category has its own characteristics that you should be aware of in order to choose the right replacement filter. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 id=\"1-types-of-filters-based-on-their-construction\" class=\"wp-block-heading has-medium-font-size\">1. Types of Filters Based on Their Construction<\/h3>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"sealed-oil-filters\" class=\"wp-block-heading has-small-font-size\"><strong>Sealed oil filters<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">They are the most common in modern vehicles. They include: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Protective metal housing<\/li>\n\n\n\n<li>Anti-drain valve to keep oil inside when the engine is turned off<\/li>\n\n\n\n<li>Built-in thread for easy installation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The anti-drain valve prevents the circuit from emptying completely and reduces wear caused by cold starts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This type of filter is completely replaced during each maintenance visit.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"cartridge-filters\" class=\"wp-block-heading has-small-font-size\"><strong>Cartridge Filters<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">They do not have an external metal casing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The motor includes the housing and the anti-drain valve<\/li>\n\n\n\n<li>Only the filter media is replaced<\/li>\n\n\n\n<li>They are more environmentally friendly and reduce waste<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">They are being used more and more, especially in vehicles subject to strict emissions regulations.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 id=\"2-types-of-filters-based-on-filter-material\" class=\"wp-block-heading has-medium-font-size\">2. Types of Filters Based on Filter Material<\/h3>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"cellulose-membrane\" class=\"wp-block-heading has-small-font-size\"><strong>Cellulose membrane<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">This is the most traditional system.<br>Advantages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Economical<\/li>\n\n\n\n<li>Suitable for normal vehicle use<\/li>\n\n\n\n<li>Recyclable<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It filters out about 40% of the particles in the oil and provides adequate performance for standard engines.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"synthetic-membrane\" class=\"wp-block-heading has-small-font-size\"><strong>Synthetic membrane<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Made from higher-density synthetic fibers.<br>Features:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Finer pores<\/li>\n\n\n\n<li>Filtration rate of nearly 50%<\/li>\n\n\n\n<li>Greater resistance to collapse<\/li>\n\n\n\n<li>Longer service life<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It is a suitable option for engines that require more precise lubrication or for demanding driving conditions.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"microcrystal-membrane\" class=\"wp-block-heading has-small-font-size\"><strong>Microcrystal membrane<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It is the most advanced filter material.<br>Advantages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Filtration capacity up to ten times greater than that of cellulose<\/li>\n\n\n\n<li>High efficiency with extremely fine particles<\/li>\n\n\n\n<li>Greater thermal stability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It is used in high-end vehicles or engines subjected to high thermal and mechanical stress.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 id=\"3-types-of-filters-based-on-their-filtration-system\" class=\"wp-block-heading has-medium-font-size\">3. Types of Filters Based on Their Filtration System<\/h3>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"mechanical-filter\" class=\"wp-block-heading has-small-font-size\"><strong>Mechanical filter<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The most common type in passenger cars. The membrane traps impurities through direct physical filtration. When it becomes clogged, the flow rate decreases and the internal pressure increases.  <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"magnetic-filter\" class=\"wp-block-heading has-small-font-size\"><strong>Magnetic filter<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It includes a magnet that traps metal particles. It is an excellent choice for engines with wear or for older vehicles, as it captures metal filings and small ferrous particles. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"high-efficiency-filter\" class=\"wp-block-heading has-small-font-size\"><strong>High-efficiency filter<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It uses microcrystalline or advanced synthetic membranes. It traps very small particles and is designed for high-performance engines or modern turbochargers. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"sedimentation-filter\" class=\"wp-block-heading has-small-font-size\"><strong>Sedimentation Filter<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It works on the principle of gravity. The particles settle at the bottom of the filter, separating from the oil. It is used primarily in industrial machinery and large engines.  <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"filters-with-thermal-imaging-cameras\" class=\"wp-block-heading has-small-font-size\"><strong>Filters with thermal imaging cameras<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">They raise the internal temperature to remove organic waste. They consume more energy and are uncommon in passenger cars. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 id=\"centrifugal-filter\" class=\"wp-block-heading has-small-font-size\"><strong>Centrifugal filter<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">It separates particles using internal centrifugal force. It is often found in industrial engines, heavy-duty vehicles, or agricultural machinery. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/CMO7766-1024x768.jpg\" alt=\"CM Filter CMO7766 oil filter\" class=\"wp-image-3367\" style=\"border-top-left-radius:20px;border-top-right-radius:20px;border-bottom-left-radius:20px;border-bottom-right-radius:20px;aspect-ratio:1.3333457124818955;width:608px;height:auto\" srcset=\"https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/CMO7766-1024x768.jpg 1024w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/CMO7766-300x225.jpg 300w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/CMO7766-768x576.jpg 768w, https:\/\/www.filtroscastello.com\/wp-content\/uploads\/2025\/12\/CMO7766.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"why-is-the-engine-oil-filter-so-important\" class=\"wp-block-heading has-large-font-size\">Why Is the Engine Oil Filter So Important?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The oil filter acts as a protective barrier between contaminated oil and critical engine components. Its role is essential for several reasons: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Protects the engine from premature wear<\/li>\n\n\n\n<li>Maintains the correct pressure in the oil circuit<\/li>\n\n\n\n<li>Prevent internal blockages<\/li>\n\n\n\n<li>Ensures consistent and efficient lubrication<\/li>\n\n\n\n<li>Prevents serious failures caused by a lack of lubrication<\/li>\n\n\n\n<li>Reduces the risk of overheating<\/li>\n\n\n\n<li>Extends the life of the oil and the engine<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A clogged filter can cause a drastic drop in performance, increased fuel consumption, and, in extreme cases, irreversible damage.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"how-often-should-the-oil-filter-be-changed\" class=\"wp-block-heading has-large-font-size\">How often should the oil filter be changed?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The general recommendation is to replace the <a href=\"https:\/\/www.filtroscastello.com\/en\/solutions\/engine\/\">filter with every oil change.<\/a> However, the exact interval depends on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Engine Type<\/li>\n\n\n\n<li>Type of oil<\/li>\n\n\n\n<li>Driving Style<\/li>\n\n\n\n<li>Conditions of use (city driving, frequent starts, high temperatures)<\/li>\n\n\n\n<li>Manufacturer&#8217;s Recommendations<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In most vehicles, the interval ranges from 10,000 to 15,000 km, although many drivers choose to change it sooner to keep the engine in the best possible condition.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since the filter is inexpensive, delaying its replacement is not worth the risk of internal wear.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"how-to-choose-the-right-filter\" class=\"wp-block-heading has-large-font-size\">How to Choose the Right Filter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Selecting the wrong filter can prevent proper lubrication or cause leakage problems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is essential to check:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vehicle model and year<\/li>\n\n\n\n<li>Engine type (gasoline, diesel, turbocharged)<\/li>\n\n\n\n<li>Compatible manufacturer part number<\/li>\n\n\n\n<li>Filtration Capacity<\/li>\n\n\n\n<li>Thread size and type<\/li>\n\n\n\n<li>Bypass valve opening pressure<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Manufacturers often provide compatibility charts or search tools to help prevent errors.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"the-role-of-the-oil-filter-in-engine-lubrication\" class=\"wp-block-heading has-large-font-size\">The Role of the Oil Filter in Engine Lubrication<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The oil filter is an <strong>essential component for <\/strong>ensuring the <strong>health and performance of the engine<\/strong>. Its ability to trap impurities, metal particles, and combustion byproducts makes the filtration process one of the cornerstones of the lubrication system.   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Proper maintenance, including <strong>regular filter and oil changes<\/strong>, ensures that the <strong>engine runs with cleaner, more stable, and more efficient lubrication<\/strong>, reducing internal wear and preventing breakdowns that can be costly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Choosing a high-quality filter<\/strong>, replacing it at the recommended intervals, and addressing any signs of clogging is the <strong>best way to ensure a long engine life<\/strong> and maintain optimal performance under all driving conditions.<br><\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"frequently-asked-questions-about-engine-oil-filters\" class=\"wp-block-heading has-large-font-size\">Frequently Asked Questions About Engine Oil Filters<\/h2>\n\n\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"3800\" class=\"elementor elementor-3800 elementor-2725\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div class=\"elementor-element elementor-element-4c942dea e-flex e-con-boxed e-con e-parent\" data-id=\"4c942dea\" 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 data-dce-title-color=\"#FFFFFF\" class=\"dce-fix-background-loop elementor-element elementor-element-10f4f75b elementor-widget elementor-widget-dce-acf-repeater-v2\" data-id=\"10f4f75b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;dce_acf_repeater_format&quot;:&quot;accordion&quot;,&quot;dce_acf_repeater_accordion_close&quot;:&quot;yes&quot;,&quot;dce_acf_repeater_accordion_start&quot;:&quot;none&quot;,&quot;accordion_speed&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:300,&quot;sizes&quot;:[]}}\" data-widget_type=\"dce-acf-repeater-v2.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"dce-acf-repeater\">\t\t\t\t<ul class=\"dce-acf-repeater-wrapper\">\n\t\t\t\t\t\t\t\t\t\t<li class=\"dce-acf-repeater-item acc_section item\" id=\"dce-acf-repeater-section-10f4f75b-1\">\n\t\t\t\t\t\t\t\t\t<h3>\t\t<button class=\"acc_button\" type=\"button\" id=\"dce-acf-repeater-button-10f4f75b-1\" aria-expanded=\"false\" aria-controls=\"dce-acf-repeater-content-10f4f75b-1\">\n\t\t\t\t\t\t<span class=\"accordion-title\">\n\t\t\t\tWhen should the oil filter be changed?\t\t\t<\/span>\n\t\t\t<span class='icon dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-down-arrow1\"><\/i><\/span><span class='icon-active dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-cross\"><\/i><\/span>\t\t<\/button>\n\t\t<\/h3>\t\t\t\t\t\t\t\t\t<div class=\"acc_content\" id=\"dce-acf-repeater-content-10f4f75b-1\" aria-labelledby=\"dce-acf-repeater-button-10f4f75b-1\" aria-hidden=\"true\">\n\t\t\t\t\t\t<span class=\"repeater-item elementor-repeater-item-0b7cca8\"><p>Most manufacturers recommend changing the oil filter with every engine oil change, which generally occurs between 10,000 and 15,000 kilometers. However, this interval may vary depending on the type of oil used, the vehicle\u2019s engine type, and operating conditions. In demanding driving conditions\u2014such as frequent short trips, city driving, repeated starts, or extreme temperatures\u2014it is advisable to perform maintenance sooner than recommended. Replacing the filter along with the oil ensures that both operate under optimal conditions and prevents the new lubricant from becoming contaminated right away.<\/p>\n<\/span><\/div><\/li>\t\t\t\t\t\t<li class=\"dce-acf-repeater-item acc_section item\" id=\"dce-acf-repeater-section-10f4f75b-2\">\n\t\t\t\t\t\t\t\t\t<h3>\t\t<button class=\"acc_button\" type=\"button\" id=\"dce-acf-repeater-button-10f4f75b-2\" aria-expanded=\"false\" aria-controls=\"dce-acf-repeater-content-10f4f75b-2\">\n\t\t\t\t\t\t<span class=\"accordion-title\">\n\t\t\t\tWhat is an oil filter, and what is its function?\t\t\t<\/span>\n\t\t\t<span class='icon dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-down-arrow1\"><\/i><\/span><span class='icon-active dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-cross\"><\/i><\/span>\t\t<\/button>\n\t\t<\/h3>\t\t\t\t\t\t\t\t\t<div class=\"acc_content\" id=\"dce-acf-repeater-content-10f4f75b-2\" aria-labelledby=\"dce-acf-repeater-button-10f4f75b-2\" aria-hidden=\"true\">\n\t\t\t\t\t\t<span class=\"repeater-item elementor-repeater-item-0b7cca8\"><div id=\"faq-question-1766047228481\" class=\"rank-math-list-item\">\n<div class=\"rank-math-answer \">\n<p>The oil filter is a component of the lubrication system responsible for trapping impurities in the engine oil. These particles can include metal shavings, combustion byproducts, dust, or sediment resulting from engine wear. Its function is to prevent these particles from circulating through the lubrication system and coming into contact with delicate components such as bearings, pistons, the camshaft, or the turbocharger. Thanks to proper filtration, the engine maintains cleaner lubrication, reduces internal wear, and extends its service life.<\/p>\n<\/div>\n<\/div>\n<\/span><\/div><\/li>\t\t\t\t\t\t<li class=\"dce-acf-repeater-item acc_section item\" id=\"dce-acf-repeater-section-10f4f75b-3\">\n\t\t\t\t\t\t\t\t\t<h3>\t\t<button class=\"acc_button\" type=\"button\" id=\"dce-acf-repeater-button-10f4f75b-3\" aria-expanded=\"false\" aria-controls=\"dce-acf-repeater-content-10f4f75b-3\">\n\t\t\t\t\t\t<span class=\"accordion-title\">\n\t\t\t\tHow much does it cost to change the oil and filters in a car?\t\t\t<\/span>\n\t\t\t<span class='icon dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-down-arrow1\"><\/i><\/span><span class='icon-active dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-cross\"><\/i><\/span>\t\t<\/button>\n\t\t<\/h3>\t\t\t\t\t\t\t\t\t<div class=\"acc_content\" id=\"dce-acf-repeater-content-10f4f75b-3\" aria-labelledby=\"dce-acf-repeater-button-10f4f75b-3\" aria-hidden=\"true\">\n\t\t\t\t\t\t<span class=\"repeater-item elementor-repeater-item-0b7cca8\"><div id=\"faq-question-1766047236847\" class=\"rank-math-list-item\">\n<div class=\"rank-math-answer \">\n<p>The cost of an oil and filter change can vary depending on the type of vehicle, the oil used (mineral, semi-synthetic, or synthetic), the filter brand, and the service center where it is performed. Generally speaking, a complete oil change typically ranges from 60 to 150 euros. Engines that require high-quality oils or special filters may exceed this range. Even so, it is one of the most economical and cost-effective maintenance tasks, as it helps prevent very costly breakdowns related to poor lubrication or inadequate filtration.<\/p>\n<\/div>\n<\/div>\n<\/span><\/div><\/li>\t\t\t\t\t\t<li class=\"dce-acf-repeater-item acc_section item\" id=\"dce-acf-repeater-section-10f4f75b-4\">\n\t\t\t\t\t\t\t\t\t<h3>\t\t<button class=\"acc_button\" type=\"button\" id=\"dce-acf-repeater-button-10f4f75b-4\" aria-expanded=\"false\" aria-controls=\"dce-acf-repeater-content-10f4f75b-4\">\n\t\t\t\t\t\t<span class=\"accordion-title\">\n\t\t\t\tWhat happens if I don't change the oil filter?\t\t\t<\/span>\n\t\t\t<span class='icon dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-down-arrow1\"><\/i><\/span><span class='icon-active dce-accordion-icon accordion-icon-right'><i aria-hidden=\"true\" class=\"icon icon-cross\"><\/i><\/span>\t\t<\/button>\n\t\t<\/h3>\t\t\t\t\t\t\t\t\t<div class=\"acc_content\" id=\"dce-acf-repeater-content-10f4f75b-4\" aria-labelledby=\"dce-acf-repeater-button-10f4f75b-4\" aria-hidden=\"true\">\n\t\t\t\t\t\t<span class=\"repeater-item elementor-repeater-item-0b7cca8\"><div class=\"elementor-element elementor-element-3296eda elementor-widget elementor-widget-theme-post-content\" data-id=\"3296eda\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-content.default\">\n<div class=\"elementor-widget-container\">\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1766047248183\" class=\"rank-math-list-item\">\n<div class=\"rank-math-answer \">\n<p>Failure to change the oil filter can lead to an excessive buildup of contaminants in the filter media. When this occurs, oil flow is restricted and internal pressure increases, often forcing the bypass valve to open and allow unfiltered oil to pass through. This means that metal particles and debris circulate freely throughout the engine, accelerating wear and potentially causing damage to key components such as pistons, bearings, or bushings. In severe cases, the lack of adequate filtration can lead to a total loss of lubrication and serious malfunctions such as engine seizure\u2014one of the most expensive repairs a vehicle can undergo.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"elementor-element elementor-element-9465a14 elementor-widget elementor-widget-spacer\" data-id=\"9465a14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor-spacer\"><\/div>\n<\/div>\n<\/div>\n<\/span><\/div><\/li><\/ul><\/div>\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\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The oil filter is one of the most important components of the engine&#8217;s lubrication system. Its function is simple but critical: to trap impurities, metal particles, combustion byproducts, and any contaminants that might mix with the oil, ensuring clean and effective lubrication. A dirty filter shortens the oil&#8217;s service life and can lead to premature [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3915,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3913","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categorizar"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/posts\/3913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/comments?post=3913"}],"version-history":[{"count":5,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/posts\/3913\/revisions"}],"predecessor-version":[{"id":5686,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/posts\/3913\/revisions\/5686"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/media\/3915"}],"wp:attachment":[{"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/media?parent=3913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/categories?post=3913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.filtroscastello.com\/en\/wp-json\/wp\/v2\/tags?post=3913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}