4 Seasons Oils

Vacaville, CA

Authorized Dealer

Amsoil

AMSOIL Crushes Sequence IIIH Engine Test

AMSOIL puts it’s Signature Oil to Severe Test. Good Video and article tell how AMSOIL “crushes” the torture test that screens oils and their ability to protect todays modern hot running engines! Also a good video on what Amsoil Signature Series Oil was put through during this grueling series of tests. AMSOIL has a superior …

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Why is there Sludge/Slime in my Radiator?

AMSOIL offers three different coolants which protect against sludge/slime build up in a vehicles radiator. Radiator slime/sludge is a symptom of other problems in the cooling system usually cause by low quality coolants.   It is a fact that almost 40% of engine failures are due to cooling system issues involving the radiator.  This article talks …

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