Got the 6.2L. Has about 22K on it. No issues Averaging about 10 MPG constantly pulling a 3500lb trailer. Not a lot of weight, but I think the trailer height is affecting the MPG due to the height. It's a 6'X12' that you can stand in. That makes a decent parachute. Gonna be pulling about 10K today with a trailer and mini ex. I'll update after that, but it won't be a long run so take it with a grain of salt though... Side not I've been liking the 6.2L so far, but as you can see I'm not pushing the 12K limit of it either.