AMSOIL P.i. is a potent gasoline performance improver with concentrated detergent that aggressively cleans stubborn, power-robbing deposits from injectors, valves and the combustion chamber.

Read helpful customer reviews from AMSOIL enthusiasts for AMSOIL P.i.® Performance Improver Gasoline Additive

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Oct 16, 2019 · We recommend using AMSOIL gasoline additives throughout the life of your vehicle to preserve like-new power and efficiency. If you choose to use gasoline additives, consider the …

I recently purchased a 2005 pickup truck that ran a little rough. I decided to get a case of AMSOIL P.I. Gasoline Additive, hoping to see some improvement after a few tanksful. Well, the improvement was …

Apr 13, 2022 · AMSOIL P.i.® Performance Improver is a potent, deep-cleaning gasoline fuel injector cleaner featuring concentrated detergents that aggressively clean stubborn, power-robbing deposits …

Nov 9, 2023 · Carbon deposits and sludge can build up over time, leading to losses in horsepower, performance and longevity. But AMSOIL P.i. and Upper Cylinder Lubricant can thwart those issues …

Jul 4, 2025 · After one tank with AmsOil PI I noticed a definite increase in accelerator response and a smoothness in engine performance. I am sold and will continue to use PI every 4K miles.

Read helpful customer reviews from AMSOIL enthusiasts for AMSOIL P.i.® Performance Improver Gasoline Additive

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