Diesel Oils - Truck

Diesel Oils - Truck - Fleet

NEW DIESEL PRODUCTS PAGE - View or Purchase

3 x OEM Drain Intervals - CJ-4 - Increase Mileage - Better Extreme Weather Performance - Save Money

Truck and Fleet Products Guide - View or Download

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Cold Weather Products Page - Oils - Additives - View or Purchase

About CJ-4 Diesel Oils - Q and A - Cost Savings - View or Download

BETTER FUEL ECONOMY - EXTENDED DRAIN INTERVALS - SHEAR STABLE

Reduced Viscosity Loss ~ Max Wear Protection ~ Reduced Oil Consumption ~ Less Deposit Formation

The advanced synthetic technology used to engineer AMSOIL Premium 5W-40 Diesel Oil enhances viscosity properties and is proven to deliver better fuel economy. In fact, the Environmental Protection Agency’s (EPA) Federal Test Procedure confirms that AMSOIL 5W-40 Diesel Oil provides up to 3 percent better fuel economy than conventional 15W-40 diesel oils.

Even at a 1.6 % fuel reduction on a single truck using AMSOIL vs conventional oils Saves around $945.00 a year. Does not include Labor, used oil disposal, filter costs and truck downtime for even greater cost reduction.

Viscosity is the most critical characteristic of oil. The viscosity, or thickness, of oil directly relates to its ability to bear extreme loads and provide adequate protection for internal engine parts. Hard-working diesel engines present a serious challenge to the lubricants that protect them, generating enough force to literally tear apart, or shear, the molecular structure of the oil.

Once a motor oil shears, it quickly loses viscosity, leading to accelerated equipment wear, excessive oil consumption, deposit formation, poor fuel economy and ultimately, increased time and money spent on maintenance and repairs.
AMSOIL Premium API CJ-4 Synthetic 5W-40 Diesel Oil retains its viscosity in the face of shearing forces. Its advanced shear-stable formulation, also available in 15W-40 viscosity grade, stays in grade longer than other oils even at 4 % fuel dilution where others failed.

Fuel Dilution in Diesel Engines

Because diesel fuel is a natural solvent, it quickly reduces the motor oil’s life expectancy and effectiveness. Fuel dilution leads to reduced oil viscosity, reduced oil film strength, increased engine wear (particularly in the cylinder/ring area), increased volatility, weakened lubricant detergency, accelerated lubricant oxidation, varnish formation, acid formation/corrosion, low oil pressure and poor fuel economy.

In diesel applications, a fuel dilution rate of 2 percent is abnormal and anything over 5 percent is excessive. Factors such as frequent starts, excessive idling, short trips and cold starts have contributed to moderate levels of fuel dilution in diesel applications for years, while recent issues with some modern applications have brought the fuel dilution problem to a whole new level. For example, AMSOIL has documented increasing fuel dilution levels in 2007–2009 Caterpillar C13 and C15 on-highway engines, possibly the result of problems with a unit injector or leaking seals.

The diesel particulate filter (DPF) regeneration process in 2007–2010 light-duty GM, Ford and Dodge diesel pickups has also been identified as a major cause of fuel dilution. These models employ a process that includes the in-cylinder injection of raw diesel fuel on the engine’s exhaust stroke. Some of the fuel may wash directly past the rings and into the crankcase, diluting the oil. Regular washing of fuel into the oil makes it even more prone to viscosity loss and places the engine at greater risk of abnormal wear.

AMSOIL Premium API CJ-4 Synthetic 5W-40 Diesel Oil stays well within viscosity grade when diluted with 2 percent fuel. It continues to maintain viscosity at even higher fuel dilution rates long after other oils have failed.

Contact us for Complete Shear Stability Brochure

AMSOIL Diesel Oils and Drain Intervals

AME (Pour Point of -44 F) 2007 and Older

AME - AMSOIL Synthetic 15W-40 Heavy Duty Diesel and Marine Motor Oil (AME) is recommended for extended drain intervals in engines that are unmodified and in good operating condition.

Diesel Engine Service

Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

Gasoline Engine Service

· Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.

*Operating conditions and drain intervals for severe and normal service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

ACD (Pour Point of -33 F) 2007 and older

ACD - AMSOIL Synthetic 10W-30/SAE 30 Heavy Duty Diesel Oil (ACD) is recommended for extended drain intervals in engines that are unmodified and in good operating condition.

Diesel Engine Service

· Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

Gasoline Engine Service

· Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.

*Operating conditions and drain intervals for severe and normal service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

HDD (Pour Point of -58 F)2007 and older

HDD - AMSOIL Synthetic 5W-30 Heavy Duty Diesel Oil (HDD) is recommended for extended drain intervals in engines that are unmodified and in good operating condition.

Diesel Engine Service

· Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

Gasoline Engine Service

· Normal Service – Up to 25,000 miles or one year, whichever comes first, or longer based on oil analysis.

· Severe Service – Up to 15,000 miles or one year, whichever comes first, or longer based on oil analysis.

*Operating conditions and drain intervals for severe and normal service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

CJ-4 Line of Oils for 2007 and Newer - Also Backwards Compatible

DEO (Pour Point of -51F)

DEO - AMSOIL Premium API CJ-4 Synthetic 5W-40 Diesel Oil (DEO) is recommended for extended drain intervals in engines that are unmodified and in good operating condition:

Diesel Engine Service

· Three times (3X) OEM* recommendation Pre 2007, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

· 2007-2009 Caterpillar C13, C15 on-highway engines must follow OEM drain interval.

· 2007-2010 Dodge 6.7L, Ford 6.4L, GM 6.6L LMM light duty diesel pickups must follow OEM drain interval. Drain intervals can be extended further with oil analysis.

Gasoline Engine Service

· Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.

*Operating conditions and drain intervals for normal and severe service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

Fuel Dilution Issues in 2007 – 2010 light-duty Turbo-Diesel pickups

TSB: MO-2009-10-01 Click Here to View or Download

Drain Interval RECOMMENDATION: 2007 and Newer

Although AMSOIL Premium Diesel Oils have shown the ability to maintain integrity under fuel-dilution conditions, the abnormally high rate and unkown long-term effects have forced AMSOIL to adjust its drain interval recommendations as a precautionary measure for 2007–2010 Dodge 6.7L, Ford 6.4L and GM 6.6L LMM light-duty turbo-diesel pickups.
In these applications, AMSOIL recommends changing AMSOIL Premium API CJ-4 Synthetic Diesel Oils (DEO, DME) at the manufacturer-recommended drain interval. Drain intervals may be extended further with oil analysis. The recommendation for these oils in gasoline applications remains 2X vehicle manufacturer recommendation

DME (Pour Point of -40F)

DME - AMSOIL Premium API CJ-4 Synthetic 15W-40 Diesel Oil (DME) is recommended for extended drain intervals in engines that are unmodified and in good operating condition.

Diesel Engine Service

· Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

· 2007-2009 Caterpillar C13, C15 on-highway engines must follow OEM drain interval.

· 2007-2010 Dodge 6.7L, Ford 6.4L, GM 6.6L LMM light duty diesel pickups must follow OEM drain interval. Drain intervals can be extended further with oil analysis.

Gasoline Engine Service

· Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.

*Operating conditions and drain intervals for normal and severe service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

Fuel Dilution Issues in 2007 – 2010 light-duty Turbo-Diesel pickups

TSB: MO-2009-10-01 Click Here to View or Download

Drain Interval RECOMMENDATION: 2007 and Newer

PCO (Pour Point of -32F) 2007 and older

PCO - AMSOIL Synthetic Blend 15W-40 Heavy Duty Motor Oil (PCO) is recommended for use according to the longest service interval established by the engine, vehicle or equipment manufacturer. Drain intervals may be extended based on oil analysis.

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