6.5TD MPG Hiway mileage Poll!

[JohnC]

I am interested to know from those of you who have 3:42's under your rig if you have issues with lack of power especially while towing.

I had a standard in mine and pulled a 2 horse trailer, about 5000 lbs. You had to work the gears a lot. It would have been better with an auto, although I doubt the mileage would have been as good. We saw 17+ mpg towing on reasonably level ground.

If I had been any heavier, I would have stuck with the 3.73 gears.

[rustyk]

I only have ~1,000 miles on it, but the Suncoast tranny rebuild, and its TC and input shaft, have apparently increased fuel economy from 10.5 to ~11.5 mpg.

[rustyk]

I only have ~1,000 miles on it, but the Suncoast tranny rebuild, and its TC and input shaft, have apparently increased fuel economy from 10.5 to ~11.5 mpg.

Now with 3K+ miles, about 800 in the mountains, mileage is ~11.7 mpg