[66Submarine]

The biggest complaint I have with mine as a DD is fuel mileage. I don't go real easy on it and drive with traffic (something like 55-65MPH, normally around 55), and in a big, heavy truck with what a lot would consider deep gears that means I seem to average around 12.75MPG; although driving easier/slower I saw 14.5MPG, so I'd guess an OD trans would help a good bit. The lighter C-10's seem to get a good bit better mileage, although I haven't done an A-B-A comparison to say exactly how much.