Have a bit of an update on our mileage.
This year we now have an F250 with 4WD, supercab, long box, 4.10 LSD and V10 engine and we are towing a 29' TT that is 6600 lbs. Has cruise control and tow/haul mode. A few days ago we drove about 300 miles in Washington on hilly and twisty roads with some gusty winds and also had to pull over numerous times to let faster traffic by. We have been down around 7mpg or a little better. This is the first time we've done a longer trip on non-freeway roads. On steady freeway driving, we seem to be getting around 10 mpg.
Last year we had a basic 2000 F150 regular cab with V6 engine and 3.55 ratio and towed a 20 TT weighing 5,000 lbs. No cruise control, just O/D on or off. Under similar driving conditions as this year on hilly, twisty and gusty roads, we got closer to 6 mpg and as low as 5.7. The little V6was just working way too hard and inefficiently most of the time.
I have been pleasantly surprised to find that a longer and heavier truck with much larger engine and a longer and heavier trailer actually gets better mileage.
Gil & Deb & Dougal the Springer Spaniel
2014 KZ Spree 262RKS & Ford F250 supercab V10 4x4 LB