4 Seasons Oils

Vacaville, CA

100% Veteran Owned Business

Authorized Dealer

Where Oil Goes and What it Does

A typical engine has hundreds of parts which must be lubricated, sealed, protect, and cooled by motor oil. Motor oil must do this under tremendous heat and stress. Valves, seals, piston wrist pins, main bearings and camshafts are just a few of the internal parts of an engine that require constant lubrication. AMSOIL SIGNATURE MOTOR […]

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AMSOIL Signature Oils fight “Boil Off” or Volatility

Newer engines equipped with performance-enhancing technologies like direct fuel injection and turbochargers, generate increased heat more often then older models. If you’ve owned a vehicle that used oil at irregular intervals you might have experienced “boil off” or volatility. At elevated temperatures during severe service especially in the summer months, oils lighter molecules can boil

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