I have always wondered if I put an overdrive unit on my RV will do any good. If it gives you a 10% decrease in RMPs does it give you 10% better gas mileage? Or just 2 or 3% better MPGs. Would it be wo...
I would like you to temper my response with the fact that I was a multi-decade driveline engineer. There is way too little information provided to even do more than scrug. There are so many variables that even if you told me everything you do know, I could not provide a more definitive answer. So, as the consensus has said,