STP Emissions Reducer + Fuel System Cleaner, 12 fluid ounces

For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care. STP Emissions Reducer + Fuel System Cleaner is a pre-emissions test treatment formulated to help lower emissions by removing deposits from the entire fuel system (fuel injectors, carburetors, intake valves, cylinder heads), clean components that affect emissions and restore peak performance with high-quality carrier of active ingredients. STP Emissions Reducer + Fuel System Cleaner is safe to use in any engine.

STP Emissions Reducer + Fuel System Cleaner, 12 fluid ounces: Pre-emissions test treatment Formulated to help clean components that affect emissions Formulated to help remove deposits Formulated to help remove gum & varnish from carburetors This product is compatible with cap‑less gas systems Use as needed Treats up to 21 gallons 12 fluid ounces (354 ml)