STA-BIL 22214 Fuel Stabilizer
Amazon.com Product Description
Gold Eagle Sta-Bil Fuel Stabilizer is a fuel additive that keeps fuel fresh for quick, easy starts after periods of storage. Designed for all 2-cycle and 4-cycle gasoline engines, Sta-Bil Fuel Stabilizer eliminates the need to drain fuel before storage in order to protect your engine from the gum, varnish, rust, and corrosion that can afflict engines after gasoline left in the tank has broken down. It also prolongs the life of an engine by removing water from gas tanks, and cleans carburetors and fuel injectors. The solution works safely and effectively in all gasoline blends, including ethanol-blended fuel up to E85.
From the reviews:
"I've used this for years and it really does work. I treat all my around the house gas (lawnmower, pressure washer, etc.) with it and my tools start on the first or second pull everytime. As another reviewer pointed out it also seems to somewhat revive / clean out gummed up and hard starting engines. It doesn't do this perfectly, but it does seem to have a slight effect.
I use this all summer and run the engines dry before storing in the winter. Before putting away for the winter I also use fogging oil (another great product) before storage. These two simple steps have saved me from lots of expense and aggravation.
Now for the note of caution: You need to carefully read the bottle and religiously follow the directions. Sta-bil keeps fuel fresh for awhile, but not forever. I believe--and I don't have the bottle right in front of me--that it will keep gas fresh for 3 or 4 months. So you can't fill up a 5 gallon can, add Sta-bil, and use that for several years. It just doesn't work that way. Also, the Sta-bil jug itself has a limited shelf life. It's good, once opened, for at most two years. Again, if you're a homeowner who doesn't plow through gas it doesn't make sense to buy a huge bottle. You're often better off buying smaller bottles.
Overall, fantastic product that really works. Sta-bil and fogging oil and starting fluid have made it so much easier for me to use small engine tools."
Amazon.com