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  • AMSOIL P.i.® Performance Improver Gasoline Additive


    4.8 star rating
    (815 reviews)
    (815 reviews)
    • 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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    AMSOIL P.i.® Performance Improver Gasoline Additive

    Current price:

    $20.69

    Retail Price (CAD)
    (815 reviews)
    (815 reviews)
    Current price:

    $20.69

    Retail Price (CAD)
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  • AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor


    Preserves Horsepower and Performance

    4.8 star rating
    (237 reviews)
    (237 reviews)
    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.
    View Detail Page

    AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor

    Current price:

    $7.69

    Retail Price (CAD)
    (237 reviews)
    (237 reviews)
    Current price:

    $7.69

    Retail Price (CAD)
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    Change location
Free Shipping with $49 Order. Use Code: FREESHIP. Order Now. *Exclusions apply.
$5 Gasoline Stabilizer with $49 Order. Use Code: 5GS. Order Now. *Exclusions apply.

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