CatacleanPetrol | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 500ml

Keeps your cats clean when you don’t do long journeys regularly. BMW quoted £5500 for two new cats when all I needed was this. The yellow drivetrain light will go out but make sure you use 99ron fuel as O2 probes often don’t like the additives in 95. I get 40mpg in my N52 21 year old 3.0l engine. See pic at 56mph.

Pretty good, even improved a Ford

Good product

Got a p400 catalyst below efficency code displaying every few hundred miles for a long time and I kept deleting itIt would stay off a while and then come back on agian. Decided to put this in with half a tank and drove as normal. Thought it didnt work but then the fault ligh went off and has stayed off for near 1k miles after I refilled the tank after running this stuff through.Impressed that it has done as its stated and solved a long standing issue, car feels a lot livelier too.

Cataclean absolutely does what it says on the tin. It cleans and improves the running of your engine, with a noticeable lift in fuel economy. I have been using it for over a decade. I can’t speak more highly of it.

Excellent for your petrol car cleans it all

Works as stated, having tried other products that claim to do the same as CATACLEAN. I have found in my experience CATACLEAN is much more effective. You will notice the difference in power in afew days after using CATACLEAN. Would recommend.

Excellent product. MPG up slightly. Smoother ride😀