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P.i. Performance Improver Gasoline Additive

Product code: APICN-EA

AMSOIL P.i. is a potent, deep-cleaning gasoline performance improverfeaturing concentrated detergents that aggressively clean stubborn, powerrobbing deposits from injectors, valves and combustion chambers. P.i. The P.i. bottle is fully compatible with the capless fuel systems ofmodern vehicles for easy application..


Availability and Price subject to AMSOIL stock, visit product's page for updated information.


  • • For use in gasoline powered cars and trucks.
    • Treats up to 30 gallons. Add entire bottle to tank up at fill-up
    • For best results, clean your fuel system with P.i. every 4,000 miles.
    • 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% ethanol blended gas.
    • Do not use with diesel or E85 fuel or two-stroke engines.
  • Many new vehicles have replaced traditional fuel caps with capless systems. The threads on most bottles restrict them from opening the flap inside the fuel neck and also make removing the bottle difficult. The P.I.bottle is fully compatible with capless fuel systems.

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