fuel conditioner does just that. It removes the water and conditions the fuel. Some of them even say that it cleans the injectors. But after talking to all the mechanics around here they reccomend the AFT. I even run it in my F250. Not only does it clean but it lubricates them to. Also the new fuel is not as thick as the old and some people are having the pumps and injectors starting to fail on the older engines. I run Sea Foam fuel additive and the ATF. But like i said only ever few months not all the time.Although some people i know run it all the time. I can see a big differenc in my tractor after i run the atf in it