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Avoiding Costly Repairs Diagnosing Diesel Fuel Injector Problems Early

Diesel enthusiasts, listen up! Since the EPA mandated a massive reduction in the sulfur content of diesel fuel in 2006, diesel fuel injectors and pumps have faced new challenges. The reduction in sulfur, which decreases the fuel’s natural lubrication, coupled with the demands of modern engines, means more stress on your injector components—potentially leading to costly repairs.

AMSOIL Diesel Injector Clean.
AMSOIL Diesel Injector Clean

Understanding the Impact of Ultra-Low-Sulfur Diesel (ULSD)

AMSOIL Diesel Injector Clean + Cetane Boost.
AMSOIL Diesel Injector Clean + Cetane Boost

Today’s diesel engines run on ULSD, which contains just 15 ppm sulfur—dramatically less than the previous 5,000 ppm. This significant reduction, although great for the environment, can lead to quicker wear and tear on your engine’s crucial components, like the high-pressure common-rail (HPCR) systems.

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Particularly prone to these challenges are engines equipped with the Bosch* CP4.2 fuel pump used in 2011-2016 Duramax* engines. Failures of these pumps can cause widespread system contamination that can wreak havoc on your engine, with repairs that can easily run between $8,000 and $12,000.

Lubricity Tests and Standards

AMSOIL Diesel All-In-One.
AMSOIL Diesel All-In-One

The current standard for diesel fuel lubricity, ASTM D975, sets a maximum wear scar at 520 microns. However, industry experts and the Engine Manufacturers Association (EMA) argue for a tighter standard of 460 microns due to the base fuels regularly failing these tests. Contrastingly, when treated with top-tier additives like AMSOIL Diesel All-In-One, diesel fuel not only meets but exceeds these rigorous standards.

The AMSOIL Advantage

You can effectively combat these lubricity issues by adding AMSOIL Diesel Injector Clean or Diesel Injector Clean + Cetane Boost to your maintenance regime. These AMSOIL products significantly enhance the lubricity of your diesel fuel, protecting your fuel pump and injectors from premature wear while optimizing overall engine performance—even under harsh conditions.

For dedicated protection and enhanced longevity of your diesel engine, consider the regular use of AMSOIL additives with every fuel fill-up. Not only does this help preserve your engine’s vital components, but it also ensures sustained peak performance, saving you from the headache of unexpected and costly repairs.

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Stay proactive, stay ahead—make sure your diesel engine continues to run smoothly with the right care and top-quality products. Remember, the health of your diesel engine is in your hands!

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*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

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