12-26-2021, 09:43 PM
I have trailer towed F-250 crew cab 4x4, F-350 crew cab 4x4 and flat towed both. Not much difference in mpg towing either way +/- 6.25 on a good day, 5.25 on a bad day. No tow car 7.5 on a good day 6.5 on a bad day. 8V92 +/-65 mph. towing, 70-75 not towing.