WHY SYNTHETIC OIL?
Learn about the differences between conventional and synthetic lubricants, review performance test results or learn more about AMSOIL in general.
Browse the full line of AMSOIL synthetic lubricants, filters, fuel additives and more. Place your order online and have it shipped direct to your house.
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PROTECTION BOOSTED TO THE MAX
AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides 6X more wear protection than required by a leading industry standard1.
SYNTHETIC VS. CONVENTIONAL
Although you might know that synthetic oils outperform conventional oils, you might not understand why. The differences begin at the molecular level.