What is the best RPM to cruise at in order to maximize gas mileage?
I didn't say to lug it, I suggested to keep the RPMs as low as practically possible to get where you are going, and you will get the best MPG that you can that way...But past a certain point the engine can't make enough torque to be efficient, so what point is that?
load clearly - I mean, that's just a few multiplications away from being injector duty cycle^this.. load and throttle opening angle are far greater contributing factors to mpg than rpm.
..even if you're talking a steep uphill which requires WOT at 2k.
Now acceleration is a different matter altogether.