Originally Posted by Ken Blythen
I had an AOD in my F250 for three years then swapped it for a C6, with no change in gas mileage - but I didn't use overdrive with the AOD (60mph local limit, so rpm's were too low in od).
Well now, if you never used the overdrive gear, that makes a difference. That means you pretty much used it as a 3-speed, and no wonder you didn't get better gas mileage.
Originally Posted by Ken Blythen
If you intend to still travel at 55ish, & your axle/engine combination is suited to that, the AOD won't be any advantage; & with planning to tow in the future, it would be a liability IMHO.
I agree with the fact that the C6 is a stronger transmission in stock form than the AOD and is much better suited for towing.
But I don't see how anyone can say that an AOD with 3 gears plus
overdrive (.67:1 ratio) doesn't get better fuel economy than a C6 transmission with only 3 gears (1:1 ratio).
