Bests & Worsts Reviews from Amazon

33 years ago I moved to 3 acres, and had a whole set of gas engines to look after (mower, string mower, chain saws, rototiller, etc). No matter what I tried, more than half of them had to go in once a year to clean and adjust the carburetor before they would run after winter storage. I complained so loudly to the shop that worked on them, that the owner introduced me to Sta-bil... and I called the company and ordered a case (couldn't find it in the stores then)... even talked with the inventor (a trained chemist). I use it by always adding a small amount (less than recommended) to every fuel can when it's filled, and a bit more to any gas tank that may remain unused for a while (like a mower in the winter). The only other thing I started doing religiously was to fill every gas tank through a filtered funnel (fine screen or felt). In the intervening 33 years, I've never had to rebuild another carburetor... and extraordinary result. Unlike most gas additives, this stuff works. Gums, glues condensates all have vanished... I still have four chain saws, two mowers, and other equipment used seasonally, and my biggest maintenance problem has vanished. The inventor has retired, and sold to a group of investors, but as far as I can tell, the product is of the same quality.