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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Terms & Conditions
Free Shipping with $49 Order
Offer valid for AMSOIL Preferred Customers and online/catalog customers.
Valid through 11:59 p.m. Central July 22, 2025.
Use code FREESHIP to apply free shipping, if eligible, at checkout.
Valid with current orders of $49 or more based on subtotal with savings.
Limited to free standard ground shipping.
Offer not valid in Alaska or Hawaii.
Canadian interline fees still apply.
AMSOIL Wash Mitt + High-Foam Car Shampoo for $10
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Code will automatically apply one AMSOIL Wash Mitt (G3914) and one 16 oz. bottle of AMSOIL High-Foam Car Shampoo (HFBCN/HFBCNC) for $10 in cart at checkout.
Limited to one AMSOIL Wash Mitt (G3914) and one 16 oz. bottle of AMSOIL High-Foam Car Shampoo (HFBCN/HFBCNC) for $10.
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