Loving my 6.2L F250. Does everything I ask running a plumbing business. It has more miles with a 3500lb trailer then without (Not much I know.) also pulls a mini ex on a trailer (Around 10-11k). No difference in feel. It's got about 22K miles on it now, but may consider a 5 Star tuner after it's out of warranty. If I love it this much now, I can't wait to see how it would feel with a tuner.