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  • AMSOIL P.i.® Performance Improver Gasoline Additive


    • 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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    Current price:

    $20.69

    Retail Price (CAD)
    Preferred Price: $16.69
    Save: $4.00 Learn More
    Current price:

    $20.69

    Retail Price (CAD)
    Preferred Price: $16.69
    Save: $4.00 Learn More
Free 3-Pack of Funnels & Nitrile Gloves with $75 Order. Order Now. Use Code: FREEFUNNEL. *Exclusions apply.

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