AMSOIL Signature Series

Should I Use a Lighter Winter Oil Weight?

AMSOIL recommends using a lighter winter oil weight when the temperatures drop. This improves cold starts and maximizes wear protection at startup. Synthetic oils provide better cold starts because petroleum-based oils contain wax. Wax thickens when it gets cold. Amsoil Signature series 5-30 will actually pour at -50 degrees F. Petroleum-based oils in the same …

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How Engine Sludge Forms. And How To Prevent It.

AMSOIL Signature series motor oils provide 90% better protection over other motor oils and have 50% more additives to fight sludge buildup. Engine sludge forms and can wreak havoc on engines… this article tells how to prevent it! This article will show the effects of sludge-how synthetic oil and additives prevent sludge. And how severe …

How Engine Sludge Forms. And How To Prevent It. Read More »

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