Catalytic Converter Cleaner Deodorizer Fuel Additive 16 Oz Can - (Pack of 12)

It didn't do anything but stall my car ,so I wouldn't recommend or purchase. Not worth the money. Made my car smell like rotten eggs. It was easy to pour into the gas tank. But a waste of energy, money and time.

I had two symptoms, a whiff of rotten egg smell in my garage with engine running, an occasional low speed "hitch in the git-along" as though there was a misfire. Running the first bottle of product in half-a-tank of gas almost eliminated the hydrogen sulphide, a second half-tank and bottle make the stink vanish. A third bottle and the occasional "hitch" went away. I put a fourth bottle through just to be sure. One month later, all is still fine!

Seems to work pretty good, I have not had any problems with my Catalytic Converter.

Worth a shot but didn't clear my check engine light.

This was a shot in the dark, but for $12 why not!About a month ago my CEL was popping on and off intermittently. I had a code reader already I had not one, but two P0420 codes--and one of them was permanent! I immediately thought it was my cat converter going bad, specifically because of the permanent code. I did the visual checks and nothing appeared melted or out of sort, so I began to do all the research I could.I tested the temperature and also the O2 sensors and they checked out. I began to get even more nervous that it was in fact the cat going bad. I was looking for a legit way to clean the converter without having to take it off. People had suggested lacquer thinner, but that didnt seem to work for anyone that had actually ran it through their fuel system. So, I started looking online and this was the only product that had positive reviews beyond belief to actually clean the cat system. Low and behold.....200 miles later, and no more CEL, it also cleared my permanent code! :Ohow i did it:Ran my car down to less than a 1/4 of a tank of gas.Poured 1 can of Catalytic Converter Cleaner & Deodorizer into the gas tank. (funnel recommended :) )Ran that 1 tank of gas to about 20 miles left ~.Reset CELFilled my car back up to a 1/4 tank of gas.Burned that offRefueled to fullHooked up obd2 reader once more to see if P0420 codes were existent at all...Nope, Permanent wasn't even there anymore.Fuel efficiency is actually up a few mpg. went from 25 to 27 mpg and also my car is noticeably more silent when punching the gas.I've been driving for about a week now and it has not popped back up yet. If you feel like your cat is dirty or dont want to shell out money for a new O2 or even a new cat, I would definitely say this is worth the $12.

I used it as instructed and cleared the code for catalytic converter, then drove about 300 miles to make sure the code would stay gone. I was literally on my way to do emissions testing and the check engine light came back on for catalytic converter. I have not seen any improvement in fuel efficiency either so it seems to be a waste of my money.

Engine light came on. Either catalytic converter or 02 sensor according to scanner. What have I got to lose? Poured it in when I had half a tank and drove about 30 miles. After about 20 minutes of driving the light went out and has not come back on. Don't notice a change in mpg but that wasn't what I was seeking. Just a fix of the light and it worked.

Is the second time that I bought this product for my car and is great.

can not rate the product yet but used before and worked super TAKE NOTE UPDATE GOT RID OF CHECK ENGINE LIGHT AN PASSED IN FLYING COLOURS THE E TEST UPDATE FEB 16/15 THE BEST U CAN BUY B U T ITS A LOT CHEAPER IN STORES

Cleared the check engine light after one tank of gas. Excellent result.

It did worst to my engine, i thought it would clean the catalyct convertor. But i got a weird roaring sound coming from the engine after i pour this in the tank and drive for 100km, it decrease the power of the acceleration, i think it makes the catalyct worst.

Besoin d'une autre bouteille pour de meilleurs résultats? Mon auto est de l'année 1988.

Did not work for me better to use cataclean