3M 08813 Complete Fuel System Cleaner Bottle - 16 fl. oz.

I had that troublesome 420 code. I took off the negative ground wire. Resetting the ecm. Added 1 fill 16 oz.. drive it 285 miles visiting relatives and friends. No code. My mileage was noticeably better. I was just over a 1/4 tank, added another 16 oz. Drove it 85 miles, filled up, haven't seen the code in over 2 weeks. Buy this stuff on Amazon it's much cheaper. Only Napa sells it. I'm a believer, by the Monkees.

Best fuel system cleaner around. I tried at least 80% of the others. My old Volvo 740 with the straight 6 burned oil. Taking the plug out you can easily see the top of the cylinder and how black and crusty it would get. One bottle of the 3M cleaner and the top of the cylinder was nearly all aluminum colored, very little residue left. I tired this with other cleaners and kits, nothing compared. to this. It's all I use and now that it is on Amazon, so easy to buy. Only NAPA would carry this and only in small quantities. PS, my Volvo is long gone, but I use this on my Suburban and Avalon every third oil change.

Mileage seems good. Running smooth. Good cleaner.

Best value in the market. This cleaner is the same professional service fix solution. Used it on my 2002 F150 after 50K miles and used one bottle every 20K until I traded the vehicle at 200K miles. No fuel delivery issues ever except a bad fuel pump.

For when not use car much; my mechanic recommends I pour in gas tank, on occasion. As I walk to work, that can be bad for engine not to use car much, this is supposed to help.