

WHY SYNTHETIC OIL?
Learn about the differences between conventional and synthetic lubricants, review performance test results or learn more about AMSOIL in general.
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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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Order $100 or more in AMSOIL products and receive free shipping, OR become a Preferred Customer and save up to 25 percent on every order.
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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.
Learn MoreSynthetic vs. Conventional
Although 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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HIGH-PERFORMANCE SYNTHETIC MOTOR OILS AND LUBRICANTS

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MYAMSOILGarage™
- Stores Maintenance info for all your vehicles
- Delivers product recommendations
- Tracks oil & filter changes
- Emails reminders
Free catalog
Browse the full line of premium AMSOIL products in the latest AMSOIL factory direct catalog.
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AMERICAN INNOVATION
As one of a few independently owned oil companies, we've always stood apart from the big oil companies. We maintain the freedom to formulate products based on performance, not price. The result is a complete product line of full-synthetic lubricants that helps you push the limits of vehicle performance, power and speed
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