AMSOIL Diesel Fuel Additives Best Choice for Increased Fuel Lubricity - Chevy and GMC Duramax Diesel Forum
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AMSOIL Diesel Fuel Additives Best Choice for Increased Fuel Lubricity

Everyone has an opinion on what is good, better, best. Since the use of Ultra Low Sulfur Diesel (ULSD) fuel, lubricity and fuel system cleaning has become more important.

Adequate diesel fuel lubricity is essential for protecting the highly engineered components in modern diesel engines, particularly high-pressure common-rail (HPCR) engines, which are subject to increased wear and deposits that interfere with an optimum spray pattern, reducing power and fuel economy. Many diesel owners add two-stroke oil to their fuel for added lubricity. AMSOIL delivers a better solution that provides additional benefits.

ULSD Provides Less Lubricity
Diesel fuel has traditionally had high lubrication properties, but the desulfurization process that allows fuel to meet modern ultra-low-sulfur diesel (ULSD) requirements also strips it of organic compounds responsible for lubrication. Although the ASTM D975 standard for diesel fuel provides a minimum level of lubricity, its not as much as the Engine Manufacturers Association (EMA) has called for.

Due to government mandates for reduced emissions, nearly all diesel fuel sold in North America is ULSD, which contains a maximum of just 15 ppm sulfur, compared to traditional diesel fuel that contained up to 5,000 ppm prior to EPA regulations taking effect in 2006. ULSD is also compatible with modern exhaust treatment devices, such as diesel particulate filters (DPF), that also help reduce emissions.

The Two-Stroke Oil Remedy
Because lost fuel lubricity and the expenses associated with fuel-pump and injector replacements are serious concerns among diesel enthusiasts, some have adopted the practice of adding a little two-stroke oil to the fuel to replenish the lost lubricating properties. While this is generally a safe practice, its not recommended. Because all two-stroke oils are different, its a guessing game regarding how much oil is required to achieve a lubricity benefit. Using too little may not provide any benefit, while using too much may violate EPA laws regarding ash content.

The Superior Remedy: AMSOIL Diesel Fuel Additives
The best way to increase fuel lubricity is to use a fuel additive designed specifically for this purpose, like AMSOIL Diesel Injector Clean, Diesel All-In-One or Diesel Injector Clean + Cetane Boost. These additives also provide specific additional benefits designed to keep diesel engines operating at top performance (see below).

Lubricity Test

The ASTM D6079 High Frequency Reciprocating Rig (HFRR) lubricity test simulates wear in high-shear conditions, measuring fuel lubricity by rubbing a steel ball on a plate in a bath of fuel and measuring the wear scar. Independent testing reveals Diesel Injector Clean provides superior fuel lubricity over untreated fuel and fuel treated with two-stroke oil.

If you have any questions or would like some pricing please let me know.
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