STP Carb Spray leaner is a specially formulated blend of powerful cleaning solvents designed to quickly remove gum, sludge, varnish, grease, dirt and carbon deposits on both internal and external carburettor parts (with disassembly), free sticking automatic chokes, and clean PCV valves. 

STP Carb Spray Cleaner is an easy to use, fast acting spray that can help maximise an engines power, performance and efficiency. Regular use will prevent the build-up of harmful deposits.