CRC Clean-R-Carb is a product engineered to maximise carburettor performance and control pollution. It is an effective in-place cleaner that removes deposits, gum, varnish, lacquer, resin, paraffin, metallic salts, oil oxides, tar and gasoline stains. CRC Clean-R-Carb removes carbon build-up and deposits on injectors, alloy heads, cylinders, pistons and linkages eliminating the need to use wire brushes thus avoiding damage to soft metal alloys. Will not harm catalytic converters or oxygen sensors. Ideal for use on all fuel system components and as a general parts cleaner.