Improved performance and economy reduced emissions and carbon build upsuitable for both petrol and diesel enginescleans your engines fuel system for greater fuel efficiencycleans the catalytic converter for fewer emissions and better performancegets to work immediately475ml bottleshortcode tabdescriptionjust pour a bottle of cataclean into your fuel tank and it gets to work immediately first it cleans your vehicles fuel system for greater mpg efficiency then it cleans the catalytic convert