Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling. STP® Fuel Injector & Carburetor Treatment is...

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Reduce emissions Remove deposits Clean components that affect emissions Remove gum and varnish from carburetors Treats up to 21 gallons...

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Helps maintain diesel engine performance by keeping fuel injectors clean and improving diesel fuel lubricity. Formulated to help prevent deposit...

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Prevent deposits. Save gasoline. Prevents the fuel line from freezing.  

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Fights fuel line freeze and corrosion no matter what time of year. Helps remove water without alcohol. Keeps fuel injectors...

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Like regular gas, ethanol fuels can leave deposits on intake valves and fuel injectors that further reduce fuel economy. Rust...

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Save gas by keeping the fuel intake system clean. Helps restore performance. Removes deposits from the entire fuel system. Helps...

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This two-in-one formula boosts octane and cleans the fuel intake system to restore lost performance. 5.25 fl. oz. bottle treats...

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Reduces exhaust smoking. Decreases metal-to-metal contact by providing a thicker oil cushion. Helps reduce oil consumption. Helps quiet noisy valves...

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Scientifically designed to improve oil drainage for vehicles over 75K miles highly concentrated active cleaning agents cleaning the deposits in...

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STP Gas Treatment improves the quality of gas by adding powerful cleaning agents that help fight the accumulation of harmful...

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Unclog dirty fuel injectors to restore performance. Helps restore lost power and acceleration. Removes harmful deposits. Compatible with capless gas...

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