Mechanic in A Bottle Gas & Diesel Formula, Gallon Jug. 2-128-1, Fuel System Cleaner & Stabilizer, Maintain Peak Performance.

Like every product from this company, it works. It cleans and rejuvenates the inside of old, unattended carburetors. You do need to make sure it gets into the carburetor and touches all the parts.

I don't now what's in this stuff but it works. If you have fuel related issues with your car, motorcycle, lawnmower- give this a try. I have literally seen 2 motorcycle engines 'come to life' after pouring the stuff in. My sister's RAV4 after sitting for 3 years- made a comeback because of this stuff. It won't cure everything; but if your issue is fuel related; clogged injectors, sticking float bowl, varnished jets, contaminated fuel pump - give this stuff a shot. A lot cheaper and easier than removing fuel rails and fuel pumps, replacing injectors and disassembling carbs. Good luck.

This is great for any small engine. It keeps the carburetor clean. I used it on a lawnmower that had started surging. It took about 2 months, but by the end of the summer, the mower was running smoothly.

This stuff really works! I have a John Deere LX178 that I bought for a song. After I got it home, I started it and ran it for a few minutes and when I lowered the RPM to its lowest setting, it would NOT idle..... just die. I put the recommended amount in the gas tank and followed the instructions on the bottle. I ran it again for about 15 minutes while driving it around and though the instructions says to let it stand for around 30 minutes after shutting it down, I elected to let it sit overnight. The next day I started it up and ran it around for a few minutes then set it to low idle speed and VIOLA!!! It idled perfectly and I did NOT have to do ANY carburetor adjustment at all. Great Stuff!!

Great product to save problems with gasoline engines

I use this stuff for everything! Great product!

I've used mechanic in a bottle for years to freshen up small gas engines, outboards, ATV's, etc. It does what it claims to do, but it is so darn expensive. I removed one star because does a gallon of this really need to cost 100 bucks? otherwise I do like the stuff.

My really likes this stuff