Serving Our Country!
Join Date: Nov 2007
Location: Austin, TX
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Fuel economy with a regearing?
I have a 2000 F-250 with the 6-speed manual transmission. In city driving I get just over 19mpg (this is with continuous stop-and-go and playing around with the turbo somewhat). In highway driving (~70-75mph) I only manage to get 16mpg.
I have 3.73 gears and stock size tires (265/75R16) and at 75mph my engine is turning 2200rpm. I imagine the reason for my poorer highway economy has to be due to this higher sustained RPM and therefore due to the 3.73 gears.
I do use the truck for some towing, however, the largest load it will ever see for the forseeable future is a 4000lb 20' boat. I imagine I would still have plenty of pulling power available for such a light load if I regear.
Does anyone have any recommendations as far as new gear ratio in consideration of pulling the boat, maintaining good fuel economy in the city (should only improve/maintain with higher gears), and improving it on the highway.