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AMSOIL first in synthetics
Gerry Reid

Raleigh & Zebulon, NC

CALL (888) 450-2658
P.i. Performance Improver Gasoline Additive


P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher octane fuel. (API)

Maximize Power

Maximize Protection

  • Maximum Deposit Clean-Up

    AMSOIL P.i. features aggressive additives that attack the most common forms of engine deposits and limit their effects.

    Removes Fuel Injector Deposits.

    Most new engines feature gasoline direct-injection (GDI) to boost power and improve fuel economy. These injectors are located inside the intense heat and pressure environment of the combustion chamber, making them particularly vulnerable to deposits. Extreme pressure combined with incomplete fuel combustion can lead to dramatically increased soot (particulate matter) levels. Direct injection typically creates 30 to 40 times more soot than port fuel injectors (PFI). Even a minimal amount of injector fouling can lead to increased pollution and wear and decreased power and fuel economy.

    Injector deposits:

    • Contribute to poor starting and rough idle
    • Decrease efficiency, power and fuel economy
    • Increase exhaust emissions

    P.i. removes stubborn deposits and keeps injectors functioning as they should. Testing shows P.i. restored GDI fuel injectors to a 100 percent flow rate after one tank of fuel.2

    Fights Intake Valve Deposits 

    Valve deposits alter or restrict airflow patterns in the cylinder. They disrupt the balanced air/fuel ratio by momentarily absorbing and releasing fuel. The deposits can also cause valve sticking by getting in the way of the valve stem and guide.

    Intake valve deposits

    • Lead to potential valve failure
    • Decrease power and efficiency
    • Increase exhaust emissions

    Helps keep valves clean and moving freely.

    • Controls pre-ignition "knock"
    • Improves fuel economy
    • Capless compatible
    • Restores power and performance
    • Reduces need for costly higher-octane fuel
    • Reduces noise from carbon rap and pre-ignition
    • Do not use with diesel or E85 fuel or two-stroke engines.
    • For use in gasoline powered cars and trucks.
    • Treats up to 30 gallons. Add entire bottle to tank at fill-up.
    • For best results, clean your fuel system with P.i. every 6,437 kilometers.
    • For large gas tanks, treat with two bottles of P.i. Using more than two bottles per treatment is not recommended.
    • Safe for use with catalytic converters, oxygen sensors, oxygenated gas and up to 15 percent ethanol blended gas.


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