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Offer valid for AMSOIL Preferred Customers and online/catalog customers in good standing.
Valid until 11:59 p.m. Central June 20, 2023.
To redeem, enter code FREEMP at checkout.
Code will automatically apply one free 8.75-oz. can of MP (AMPSC), if eligible, in cart at checkout with order of $75 or more.
Offer applies only to individual orders of $75 or more based on subtotal with savings.
Offer may be modified or terminated at any time except as prohibited by law.
Offer available while supplies last.
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P.i. Performance Improver Gasoline Additive

P.i. Performance Improver Gasoline Additive

Product Code: APICN-EA

4.9 star rating

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Restores up to 14% horsepower¹
Restores GDI fuel injectors to 100% flow rate after one tank of fuel²
Improves fuel economy
Reduces need for costly higher-octane fuel
Helps prevent carbon rap
Controls pre-ignition knock
Compatible with capless fuel systems

¹Based on third-party testing in a 2016 Chevrolet* Silverado* 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary.
²ASTM D5598(M) – 2013 Buick Regal test vehicle.

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P.i. Performance Improver Gasoline Additive

P.i. Performance Improver Gasoline Additive

$16.69

Retail Price (USD)

Preferred Price: $12.99
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Product Code: APICN-EA

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$16.69

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Upper Cylinder Lubricant

Upper Cylinder Lubricant

Product Code: UCLCN-EA

Preserves Horsepower and Performance

4.8 star rating

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Your engine’s top-end is sparsely lubricated and prone to the development of performance-robbing deposits. It’s also highly susceptible to corrosion, an issue compounded by the prevalence of ethanol in today’s fuel. AMSOIL Upper Cylinder Lubricant is designed to solve those issues. Its AMSOIL-exclusive, powerful formulation helps maximize engine power and performance while increasing engine life. And unlike competing fuel additives, AMSOIL Upper Cylinder Lubricant works.

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Upper Cylinder Lubricant

Upper Cylinder Lubricant

$5.79

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Preferred Price: $4.49
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Product Code: UCLCN-EA

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$5.79

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DOMINATOR® Octane Boost

DOMINATOR® Octane Boost

Product Code: AOBBE-EA

4.9 star rating

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Increases octane up to 4 numbers for improved performance
Maximizes power
Reduces engine knock
Improves ignition & responsiveness
Helps fuel burn more cleanly
Removes carbon deposits

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DOMINATOR® Octane Boost

DOMINATOR® Octane Boost

$12.39

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Preferred Price: $9.89
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Product Code: AOBBE-EA

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$12.39

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Motorcycle Octane Boost

Motorcycle Octane Boost

Product Code: MOBCN-EA

4.8 star rating

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Increases octane up to three numbers
Maximizes power & performance
Helps eliminate engine knock & ping
Cleans harmful deposits

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Motorcycle Octane Boost

Motorcycle Octane Boost

$5.99

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Preferred Price: $4.79
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Product Code: MOBCN-EA

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$5.99

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Added to Your Shopping Cart

Free MP (Metal Protector) with $75 Order. Shop Now and Enter Promo Code: FREEMP. Exclusions apply.

Terms & Conditions

Offer valid for AMSOIL Preferred Customers and online/catalog customers in good standing.
Valid until 11:59 p.m. Central June 20, 2023.
To redeem, enter code FREEMP at checkout.
Code will automatically apply one free 8.75-oz. can of MP (AMPSC), if eligible, in cart at checkout with order of $75 or more.
Offer applies only to individual orders of $75 or more based on subtotal with savings.
Offer may be modified or terminated at any time except as prohibited by law.
Offer available while supplies last.
Excluded in Alaska and Hawaii.

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