Wynns Injector Decarbonizer - 0.5L 500ml - Removes Carbon Deposits - 14355A Removes carbon deposits around engine injectors and other engine parts to facilitate its removal. Helps to dismantle blocked nozzles by diluting the solidified carbon residues that prevent the extraction of the injector. Useful for disassembly of injectors, spark plugs, turbo nuts, etc. Compatibility: Engine: Petrol & Hybrid petrol, Diesel & Hybrid diesel How to use: Shake well before use. Spray directly on the area to be treated with short intervals. Leave on for a few minutes, so that the product can penetrate. Repeat the operation if necessary.