Forum Discussion
dodge_guy
Aug 09, 2018Explorer II
time2roll wrote:dodge guy wrote:You need a lower differential gear or stay out of overdrive. This will get your RPM up and speed down to improve your efficiency even more. Not to mention safety.
That all makes sense, but the fact is when the engine is running at its peak torque that’s where it’s most efficient. When going slower the engine is lugging which means more throttle opening and more fuel being dumped in to try and maintain that momentum.
What matters most is that at 65-67 or so I get less mileage than at 75!
Wind resistance rises exponentially with speed. Far more energy is needed at 75 vs 65 mph.
I had 3.73`s. even in 3rd the rpms were too low at 65. I had to run at least 70 to get it to perform decent, however my mileage was terrible at 6.5mpg!
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,102 PostsLatest Activity: Jan 18, 2025