I have a 2011 travel trailer 22ft and a 2003 expler 4.6 class three hitch with trailer tow do i use overdrive all the way to my destination or not .thanks
My manual says the trany will stay cooler wit OD locked out. For the same reason. The fluids circulate more, because there is higher RPM. I also get better MPG, and better performance with OD locked out. My engine is MUCH happier turning a little more RPM.
To the OP. I wouldn't worry too much. Your trany ain't gonna hold OD anyway.