Fuel Milege
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Depends a lot on the rear gear ratio and whether you have an OD trans. My 1984 F250 Super cab Super Duty with C-6 (no overdrive) and a 4.10 rear end (great tow gear but not much of and mpg gear), got 6.5 to 8.0 mpg empty or towing when stock. Since then have added a 3" exhaust, a carb swap and a distributor recurve and now gets 10.0 to 10.5 empty and 9.5 mpg towing the quad trailer (dual axle 4 big quads) or the boat and 7.5 to 9.5 mpg with the 13 foot camp (3300 pounds dry weight) on board.
