Fuel Additives

Want to maximize fuel efficiency and avoid problems such as rough idling, weak acceleration, stumbling and stalling? STP® fuel additive products can help.

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Fuel Additives

STP® 1 Tank Tune Up

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Fuel Additives

Ultra 5-In-1 Fuel System Cleaner

Super Concentrated Fuel Injector Cleaner

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Fuel Additives

Super Concentrated Fuel Injector Cleaner

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Fuel Additives

Gas Treatment

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Fuel Additives

Complete Fuel System Cleaner

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Fuel Additives

Octane Booster

High Mileage Fuel Injector & Carburetor Treatment

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Fuel Additives

High Mileage Fuel Injector & Carburetor Treatment

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Fuel Additives

All Season Water Remover

High Mileage Complete Fuel System Cleaner

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Fuel Additives

High Mileage Complete Fuel System Cleaner

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Fuel Additives

Fuel System Cleaner for Ethanol

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Fuel Additives

Engine & Fuel Systems

Functional Fluids

Maintenance & Other

Ceramic Oil Treatment - 15,000 Mile Protection

Ultra 5-In-1 Fuel System Cleaner

Racing

About STP^®

Fuel Additives

STP® 1 Tank Tune Up

Ultra 5-In-1 Fuel System Cleaner

Super Concentrated Fuel Injector Cleaner

Gas Treatment

Complete Fuel System Cleaner

Octane Booster

High Mileage Fuel Injector & Carburetor Treatment

All Season Water Remover

High Mileage Complete Fuel System Cleaner

Fuel System Cleaner for Ethanol

Diesel Fuel Injector Treatment