Tow haul and overdrive
Does tow haul lock out overdrive? Mine doesn't seem to or, I haven't observed correctly.
Forum Discussion
Cummins12V98 wrote:Bedlam wrote:
You were told wrong.
I should have added when towing at let's say 60.
My 68RFE would tow at 60 in 6th all day with 3.42's on flat ground with tH and EB engaged.
MeAgain???
My Aisin with 3.42's will not shift into 6th until 65mph but once it's there I can back down to 60 in 6th. If it downshifts to pull a grade then it will not go back to 6th until 65. I'm sure it's rpm and load related but 65 is the magic number to get 6th with TH on. 5th is 55mph. It will run in 4th until 55 with TH on. This relates to 2000 RPM.
Unless I'm running interstate I always lock 6th out towing my rig. There are times I will lock 5th out in the rolling backroads.
