first time for everything... Grant Hildabrand 10/07/2010 @ 3:46pm I have never had a problem with dirty fuel until this year. We always used gravity flow tanks and filled the tractors up at the shop when we got finished for the day. This year though, I was working away from home and decided I could save some time by getting a 55 gallon drum that had been used for fuel. Apparently it had something in it because I clogged 3 filters on my tractor. Very frustrating!