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Diesel Trucks and Semis

AMSOIL synthetic diesel oils are synonymous with power and performance. They're tough, reliable and they withstand the devastating effects of severe-service towing and heavy hauling that destroy lesser oils. By reducing friction and guarding against wear, AMSOIL synthetic diesel oils increase fuel economy and help keep vehicles on the job, saving you money.
When combining fuel savings and extended-drain savings, AMSOIL provides diesel owners a significant overall annual cost reduction.

$174.17 annual savings per vehicle**

*AMSOIL has documented high fuel dilution in 2007-present light-duty diesel pickups (Dodge, Ford, and GM/GMC LMM) equipped with diesel particulate filters. In these specific applications, AMSOIL recommends following the manufacturer-recommended drain interval. Oil drain intervals can be extended further with oil analysis.

**Examples only. Based on December 2013 figures and average U.S. on-highway diesel fuel price. Prices subject to change.


AMSOIL Long Life synthetic lubes can reduce the operating temperature of your truck or semi by 10 to 20 degrees. 

SAE 50 Long-Life Synthetic Transmission Oil

Specially formulated to meet the demanding requirements of manual transmissions found in high-torque, heavy-duty line-haul trucks and other commercial applications. Its synthetic base stocks and premium additives help reduce gear and bearing wear, improve shifting and extend transmission life throughout drain intervals of up to 500,000 miles/five years.

Severe Gear® 75W-90 Synthetic Gear Lube

Engineered for maximum performance in severe-duty applications. This state-of-the-art AMSOIL formulation features an exclusive blend of high-viscosity, shear-stable synthetic base oils and an extra treatment of high-performance additives. AMSOIL Severe Gear Synthetic EP Gear Lube maintains its viscosity for long-lasting protection against metal-to-metal contact.

AMSOIL Diesel Motor Oils

Browse the full line of premium AMSOIL products in the latest AMSOIL factory direct catalog.