AMSOIL Helps Chevy* Duramax* Top 1-Million Miles
Those who take vehicle maintenance seriously can reap the financial rewards of vehicle longevity.
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Oil viscosity is the measure of its resistance to flow. How quickly or slowly motor oil flows affects how well it protects your engine.
Learn MoreAlthough you might know that synthetic oils outperform conventional oils, you might not understand why. The differences begin at the molecular level.
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