Cataclean Petrol was specifically created to help clean out the engine and fuel lines of the vehicle. The original patented formula is poured directly into the fuel tank along with normal petrol and gets passed around the inner workings of the engine as the fuel flows throughout. Using this product can reduce engine emissions by up to 60% by restoring the engine, improving MPG and restoring engine performance. As well as cleaning the engine, it also helps protect the catalytic converter in the vehicle. Cataclean is suitable for use with petrol and hybrid engines and saves you money by not having to pay extra for premium fuels.