1999 F150 2WD 5.4L 6 X 12 pulled like a champ
2001 F150 4X4 5.4L 7 X 16 pulled like a champ but it would slow down a bit in the mountains
2002 F250 4X4 V-10 7 X 16 pulled like a champ
2002 F250 4X4 V-10 8.5 X 24 pulled it but the gas milege was crap and it didn't like hills a lot
2004 F250 4X4 6.0L Deisel, 8.5 X 24 Pulls it like it's not even there!
I tow at 80mph