Proper Shifting to Reduce Engine Temperature
I have had my RV for 12 years and I think I learned something new. From the very first month I had the RV I experienced overheating when traveling in temps over 100 degrees outside. I have a CAT C...
Forum Discussion
OK, a little more detail.
Wally is correct-- lower RPM= better MPG.
But (yes, LARGE BUT) if coolant temperatures rise, MPG is a LOT less important than keeping the engine from overheating.
So, indeed if coolant temperatures are not rising, low RPM is the ticket (as long as it is above peak torque RPM-- for Cat C7 that is 1,440 RPM).
If temperature starts to rise, downshift to raise RPM's and back out of throttle. Yes, lower MPG, HAPPIER ENGINE!
Wally is correct-- lower RPM= better MPG.
But (yes, LARGE BUT) if coolant temperatures rise, MPG is a LOT less important than keeping the engine from overheating.
So, indeed if coolant temperatures are not rising, low RPM is the ticket (as long as it is above peak torque RPM-- for Cat C7 that is 1,440 RPM).
If temperature starts to rise, downshift to raise RPM's and back out of throttle. Yes, lower MPG, HAPPIER ENGINE!
