{"id":84651,"date":"2023-06-01T19:23:33","date_gmt":"2023-06-02T02:23:33","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=84651"},"modified":"2025-05-14T10:01:54","modified_gmt":"2025-05-14T17:01:54","slug":"what-happens-if-you-run-out-of-diesel-exhaust-fluid","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/what-happens-if-you-run-out-of-diesel-exhaust-fluid\/","title":{"rendered":"What Happens If You Run Out Of Diesel Exhaust Fluid?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col,.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col{flex-direction:column;}.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column84651_c3f7db-b4{position:relative;}@media all and (max-width: 1024px){.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column84651_c3f7db-b4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column84651_c3f7db-b4 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-1f9993  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-2dbcc3\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72, .wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72[data-kb-block=\"kb-adv-heading84651_26d521-72\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72[data-kb-block=\"kb-adv-heading84651_26d521-72\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading84651_26d521-72[data-kb-block=\"kb-adv-heading84651_26d521-72\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading84651_26d521-72 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading84651_26d521-72\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Without diesel exhaust fluid (DEF), the exhaust system becomes clogged, and the powertrain control module might put the engine in limp mode. Most diesel vehicles manufactured after 2010 need DEF.<\/li>\n\n\n\n<li>You can drive with low DEF levels in the storage tank, but doing so will damage the vehicle. Most diesel vehicles have a DEF warning light that turns amber when DEF levels are low and red when the tank is dry.<\/li>\n\n\n\n<li>DEF is a mixture of urea and deionized water that reduces nitrogen oxide emissions. DEF gets injected into the diesel exhaust before entering the catalytic converter, and enables chemical reactions that break down nitrogen oxide into safer reagents. DEF reduces maintenance, decreases risk to human health and the environment, and increases engine efficiency.<\/li>\n\n\n\n<li>One gallon of DEF generally lasts 300 to 500 miles, and most vehicles require one gallon of DEF for every 50 gallons of diesel fuel.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Running out of diesel exhaust fluid is a problem you don&rsquo;t want to have. If you ever run out, drive to the nearest gas station and replenish your supply immediately. When your storage tank runs empty, you can expect your vehicle to display the following signs:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your car slows down to a crawl.<\/li>\n\n\n\n<li>Your DEF header gets damaged.<\/li>\n\n\n\n<li>Your exhaust system may become clogged and malfunction.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What Is Diesel Exhaust Fluid and What Is It For?<\/h2>\n\n\n\n<p><strong><a href=\"https:\/\/www.carparts.com\/diesel-exhaust-fluid\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Diesel Exhaust Fluid\">Diesel Exhaust Fluid<\/a> (DEF) is a special fluid that exists to reduce the emission of nitrogen oxide with the help of a <a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converter\">catalytic converter<\/a>.<\/strong> This conversion is accomplished through a system called selective catalytic reduction or SCR.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-1024x683.jpg\" alt=\"car diesel exhaust fluid and fuel tank cap\" class=\"wp-image-84820\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/car-diesel-exhaust-fluid-and-fuel-tank-cap-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Diesel Exhaust Fluid (DEF) is a special fluid that exists to reduce the emission of nitrogen oxide with the help of a catalytic converter.<\/figcaption><\/figure>\n\n\n\n<p>This system causes chemical reactions within your car&rsquo;s catalyst chamber, transforming the harmful gasses created by diesel fuel into breathable nitrogen and water.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Is DEF Made Of?<\/h3>\n\n\n\n<p><strong>DEF is a specially-made fluid composed of 32.5% urea and 67.5% deionized water.<\/strong><\/p>\n\n\n\n<p>If you&rsquo;re curious about why or how urea is even a part of this equation, don&rsquo;t be alarmed. The urea used in the creation of DEF doesn&rsquo;t come from any natural source.<\/p>\n\n\n\n<p>While urea is indeed an organic compound, it can also be created synthetically with ammonia and carbon dioxide.<\/p>\n\n\n\n<p>When it comes to DEF, it&rsquo;s a good idea to avoid cutting costs. High-quality DEF goes a long way in terms of increasing the longevity of your catalytic converter. Taking care of your DEF is just as important, so don&rsquo;t use expired fluid, and don&rsquo;t leave it sitting in the sun. Doing so would decrease the quality of your DEF.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Taking care of your DEF is just as important, so don&rsquo;t use expired fluid, and don&rsquo;t leave it sitting in the sun. Doing so would decrease the quality of your DEF.<\/p>\n<cite><em>&ndash;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/anthonyharlin\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Anthony Harlin, ASE Certified Master Automobile Technician\">Anthony Harlin, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">How Does DEF Work?<\/h3>\n\n\n\n<p><strong>DEF is injected into the diesel exhaust before entering your car&rsquo;s catalytic converter. The reaction to convert harmful gasses into breathable ones occurs in the catalyst chamber.<\/strong><\/p>\n\n\n\n<p>Since DEF is made out of urea and deionized water, this fluid can be vaporized through SCR to create ammonia and carbon dioxide.<\/p>\n\n\n\n<p>The chemical reactions caused by SCR convert toxic nitrogen oxide into less harmful reagents. The ammonia generated converts nitrogen oxide into nitrogen and water, which are both harmless to the environment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Do I Know if I&rsquo;m Low on DEF?<\/h2>\n\n\n\n<p>If you&rsquo;re unsure if you&rsquo;re running low on DEF, you can check for yourself by examining your dashboard. <strong>Most vehicles have an <a href=\"https:\/\/www.carparts.com\/blog\/what-causes-your-def-warning-light-to-switch-on\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"indicator lamp\">indicator lamp<\/a> dedicated to how much DEF you have, changing colors and states depending on the levels of fluid remaining:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Flickering Amber: Your DEF levels are at 5% or below.<\/li>\n\n\n\n<li>Solid Amber: Your DEF levels are at 2.5% or below.<\/li>\n\n\n\n<li>Solid Red: Your DEF levels are at 0%, completely dry.<\/li>\n<\/ul>\n\n\n\n<p>There is a <a href=\"https:\/\/www.carparts.com\/diesel-emissions-fluid-(def)-tank\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"storage tank\">storage tank<\/a> you can inspect if you want to check your vehicle&rsquo;s DEF level manually. This tank is normally found beside the diesel fuel saddle tank on trucks. As for passenger cars, the DEF storage tank is normally found in the spare tire and tool storage area.<\/p>\n\n\n\n<p>Despite this, not every vehicle has a DEF gauge. In this case, your best bet would be to simply top off your DEF with every oil change &mdash; especially if you can&rsquo;t gauge how much you have left. Sometimes, sensor systems can fail to detect how much DEF you really have, and in this case, a top-off will keep reserves full.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How Long Does DEF Last?<\/h3>\n\n\n\n<p>Fortunately, modern diesel vehicles have a dashboard warning system that lets you know when it&rsquo;s time to replace or refill your DEF. <strong>One gallon of DEF should last you approximately 300 to 500 miles.<\/strong> So long as your DEF tank never goes empty, you can expect a smooth and steady driving experience.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">How Do You Know How Much DEF You Need?<\/h3>\n\n\n\n<p><strong>Most DEF storage tanks require one gallon of DEF for every 50 gallons of diesel fuel.<\/strong> It&rsquo;s a good practice to top off every now and then to avoid putting yourself in a difficult situation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Happens if You Run Out of DEF?<\/h2>\n\n\n\n<p><strong>In most cases, running out of DEF means you just have to refill the tank and your vehicle will be good to go.<\/strong> However, this isn&rsquo;t always the case, and sometimes running your DEF tank dry leads to serious consequences. For example, your vehicle could enter a state known as limp mode, where the vehicle&rsquo;s speed limit gradually decreases until it can no longer be driven.<\/p>\n\n\n\n<p>Fortunately, you will receive warnings from your vehicle that let you know when it&rsquo;s time to refill the DEF tank before it enters limp mode. It&rsquo;s important to get your tanks refilled as soon as possible. The lower you let the speed limit get through limp mode, the more money you&rsquo;ll need to spend on diagnostics fees, repairs, and unlocking the vehicle.<\/p>\n\n\n\n<p>In the event that your vehicle gets totally locked by limp mode, it&rsquo;s a good idea to bring it to a repair facility where a dealer-level scan tool can unlock it.<\/p>\n\n\n\n<p>In addition, running your DEF storage tank dry puts you at risk of far more severe problems, albeit ones that are more uncommon. You run the risk of clogging your exhaust system with gunk.<\/p>\n\n\n\n<p>A clogged exhaust system leads to several problems for your vehicle:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The stench of diesel and smoke in your car.<\/li>\n\n\n\n<li>Loud noises from the exhaust and the engine.<\/li>\n\n\n\n<li>Difficulty accelerating and moving at reasonable speeds.<\/li>\n<\/ul>\n\n\n\n<p>Emptying a DEF storage tank also has the potential to damage your DEF header&ndash;a sensor that measures the level, temperature, and quantity of DEF in your tank. Replacing your DEF header can be expensive and cost you up to $1,200.<\/p>\n\n\n\n<p>Bear in mind that your DEF tank might get flagged as empty when it&rsquo;s not. If this happens, there&rsquo;s a good chance there might be something wrong with your vehicle&rsquo;s DEF level sensor assembly. The level sensor is usually serviced as part of the whole DEF tank, so bring your vehicle to an auto shop for maintenance if you feel there&rsquo;s something wrong.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can You Drive With Low DEF?<\/h3>\n\n\n\n<p>While it is possible to drive with low DEF levels in the storage tank, it is not recommended.<\/p>\n\n\n\n<p>If your vehicle runs out of DEF, you&rsquo;ll notice a sharp decrease in your vehicle&rsquo;s speed. You&rsquo;ll have enough speed to drive home or to the nearest gas station, but it&rsquo;s ill-advised to drive anywhere else.<\/p>\n\n\n\n<p>Driving while your DEF indicator lamp on also damages your vehicle, and doing so continuously means your engine might force itself to shut down.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How To Refill DEF<\/h2>\n\n\n\n<p>DEF goes into its own separate tank, which can usually be accessed through the port beside the diesel filler port. The DEF port will have a blue cap that can be unscrewed, and you can use a funnel to feed the DEF into the system. Be sure to add the DEF slowly and carefully to avoid spillage. Try to fill the tank up to its maximum capacity without overfilling.<\/p>\n\n\n\n<p>Can you add DEF while the engine is running? Yes. Is it a good idea? No. Adding DEF while the engine is running increases the risk of spills, so it&rsquo;s best to turn your vehicle&rsquo;s engine off before adding DEF to the system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Which Vehicles Need DEF?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-1024x683.jpg\" alt=\"modern car with engine visible\" class=\"wp-image-84819\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/modern-car-with-engine-visible-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">If your vehicle has a diesel engine and was manufactured after 2010, there&rsquo;s a good chance it needs DEF.<\/figcaption><\/figure>\n\n\n\n<p><strong>If your vehicle has a diesel engine and was manufactured after 2010, there&rsquo;s a good chance it needs DEF.<\/strong> After all, diesel-powered vehicles built after 2010 are required to have SCR.<\/p>\n\n\n\n<p>SCR systems are installed in passenger cars and heavy-duty engines that run on diesel. Because of this, you can expect the following vehicles to use DEF:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Buses<\/li>\n\n\n\n<li>Trucks<\/li>\n\n\n\n<li>RVs<\/li>\n\n\n\n<li>Vans<\/li>\n\n\n\n<li>Passenger cars<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">The Benefits of Using DEF<\/h2>\n\n\n\n<p>Aside from being better for the environment, using DEF comes with many benefits that will help you save a lot of time and money in the long run.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Less Maintenance<\/h3>\n\n\n\n<p>SCR engines that use DEF typically last longer than the ones that don&rsquo;t. Since DEF isn&rsquo;t harmful to the components of your engine, you won&rsquo;t have to bring them in for repairs as frequently. You also won&rsquo;t have to worry as much about your vehicle randomly breaking down.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Better for Your Health and the Environment<\/h3>\n\n\n\n<p>Diesel fumes are toxic greenhouse gasses that pollute the air, causing acid rain and contributing to the greenhouse effect. They are also directly linked to the development of asthma, cancer, bronchitis, and numerous cardiovascular diseases. Since DEF minimizes the amount of nitrogen oxide released into the air, it is much better for your health and the environment as a whole.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">More Efficient for Your Engine<\/h3>\n\n\n\n<p>Using DEF generally makes your vehicle last longer because the production of toxic gasses is minimized. This means the combustions in your vehicle&rsquo;s engine are more efficient and you&rsquo;ll use less fuel. DEF also reduces power consumption, and you won&rsquo;t need to change your oil as frequently.<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"QAPage\",\n    \"mainEntity\": {\n        \"@type\": \"Question\",\n        \"name\": \"What Happens If You Run Out Of Diesel Exhaust Fluid?\",\n        \"text\": \"What Happens If You Run Out Of Diesel Exhaust Fluid?\",\n        \"answerCount\": 1,\n        \"upvoteCount\": 0,\n        \"dateCreated\": \"2023-06-02T02:23:33Z\",\n        \"dateModified\": \"2023-06-02T02:23:34Z\",\n        \"author\": {\n            \"@type\": \"Person\",\n            \"name\": \"A user\"\n        },\n        \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"In most cases, running out of DEF means you just have to refill the tank and your vehicle will be good to go. However, this isn&rsquo;t always the case, and sometimes running your DEF tank dry leads to serious consequences. The best-case scenario is that your vehicle will only slow to a crawl, moving at approximately 5 mph.\",\n            \"upvoteCount\": 0,\n            \"url\": \"https:\/\/www.carparts.com\/blog\/what-happens-if-you-run-out-of-diesel-exhaust-fluid\/\",\n            \"dateCreated\": \"2023-06-01T19:23:00Z\",\n            \"author\": {\n            \"@type\": \"Person\",\n            \"name\": \"CarParts.com Research Team\"\n            }\n        }\n    }\n}\n<\/script>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Running out of diesel exhaust fluid is a problem you don&rsquo;t want to have. If you ever run out, drive&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/what-happens-if-you-run-out-of-diesel-exhaust-fluid\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":84822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[52,3750],"tags":[1189,3566,3540],"ppma_author":[2607,3742],"class_list":{"0":"post-84651","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-exhaust-system","9":"tag-catalytic-converter-2","10":"tag-diesel-emissions-fluid-def-tank-2","11":"tag-diesel-exhaust-fluid","12":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Happens If You Run Out Of Diesel Exhaust Fluid? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Running out of diesel exhaust fluid is a problem you don\u2019t want to have. Read on to learn what happens when you run out of DEF.\" \/>\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.carparts.com\/blog\/what-happens-if-you-run-out-of-diesel-exhaust-fluid\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Happens If You Run Out Of Diesel Exhaust Fluid? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Running out of diesel exhaust fluid is a problem you don\u2019t want to have. 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