logo2In 1972 AMSOIL developed the first synthetic motor oil in the world to meet American Petroleum Institute service requirements. Currently, the AMSOIL product line includes the finest quality synthetic motor oils, synthetic diesel oils, gear lubes, synthetic greases, industrial lubricants, oil filters, air filters and automotive performance products.

Big Thompson Diesel and Automotive highly recommends Amsoil for all of your oil, lubricant, filter, and performance product needs. We have seen these products go above and beyond other products available over and over again. Amsoil will keep your engines running in top shape and save you money while doing it. Schedule your appointment today for an Amsoil Oil change or use the link below to place your order.

5w30 Oil Case Study

Diesel Fleet Fuel Economy Study

Amsoil PI Fuel Injector Cleaner Study

Amsoil 5W40 CJ4 Diesel Oil Fuel Economy Study & Shear Stability Study

Amsoil Fleet Vehicle Fuel Economy Study