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P.I. Performance Improver Concentrate (API)

P.I. Performance Improver Concentrate (API) AMSOIL PI improved fuel economy by reducing port fuel injector deposits, intake valve deposits and combustion chamber deposits in 100% of the vehicles tested!

Untreated Fuel Leads to Poor Engine Performance
A vehicle demonstrates its best efficiency and engine performance when it is new. As the engine ages, its performance suffers from gasoline fuel-generated deposits that form on the fuel injectors, intake valves and combustion chamber. Additives are required to control deposit formation.

Today’s fuels, however, lack sufficient treatments of either enough additives or high quality additives. Fuel system deposits result in the following:

• Lost fuel economy
• Lost power and poor throttle response
• Failed emission tests
• Poor drivability - surging, hesitation, stalling, rough idle
• Engine knocking (pinging) and rap
• Difficult starts

Package sizes include:

• 12-oz. Bottle
• 12-oz. Bottles (case of 12)