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...
Diesel engine applications are not applicable to gasser issues. To maximize an OD change a tighter torque converter is required. Been there, a lot. Not a matter of saving fuel, more a matter of saving accessories, AC compressor, water pump, PS pump, etc, happier @ 2500/2800 than mid 3000 r's.