4 Seasons Oils

Vacaville, CA

100% Veteran Owned Business

Authorized Dealer

Synthetic Motor Oil

Amsoil Signature Oils Cleans Up The Competition

The total base number test (TNB) measures the additives in a motor oil. The higher an oil’s TBN, the better its ability to neutralize contaminants such as combustion by-products and acidic materials. Higher TBN oils neutralize a greater amount of acidic material, which results in longer oil life and cleaner engines. AMSOIL has a large […]

Amsoil Signature Oils Cleans Up The Competition Read More »

Ford Flex Exceeds 350K with AMSOIL Signature Series Oil

Tom Weiland of Richland, MN has been using AMSOIL Signature Series 5-30 in his Ford Flex. He bought a new car, and started using Amsoil after the first few oil changes. After 350,000 miles, the engine has not required ANY replacement parts that require oil. He took his Flex for a water pump repair, and

Ford Flex Exceeds 350K with AMSOIL Signature Series Oil Read More »