STP All Season Water Remover, Treats Up to 21 Gallons, 5.25 Fl Oz

Works good 👍🏽

Nice, as advertised, use mainly for lawn equipment fuel maintenance!

Started using this last year, as we had water in the tank! Cost a few bucks to fix too! Combined with a locking gas cap, all is well! We think we had a nightly visitor siphoning, as our mileage improved vastly!!

worked like a champ !!

We live in the desert and it rained (very rare)! We also filled up with gas the morning after - and guess what - the engine was sputtering and bucking like a bronco. We drive a big Excursion - so the gas tank is 44 gallons. We were not looking forward to dumping the fuel and having the tank 'dried' - so we tried this old standard. And it worked - we needed two bottles due to the amount of gas but immediately the problem was solved. Thanks for a great product - easy to use = just dump it into the tank and drive away. (Cannot say anything about the mileage)

Stuff works

The only down side was the price I paid, but I needed it in a pinch and couldn't find anything locally.

Many products that claim water removal only add some alcohol to disperse water, but current fuels already contain ethanol so they are not very effective. It's the ethanol in the fuel that absorbs the water vapor.