i just put 20 gallons in mine a month ago, went to use it and they didnt have the right fuse in fuse box, once i changed it, it was fine, the first time i actually pump i put 1/2 gallon in jug and put in lawn mower. i will not put anything but 91 rec fuel in it since the ethanol will mess with orings. i plan on filling it for the winter with some seafoam. one thing i dont care for is how slow it pumps, but if u need fuel slow is better than none at all.