Out of curiosity, is there a particular cruising RPM where the MPG starts to drop off? Is there a good "sweet spot" where you're not bogging the engine and have enough power but you've still got the decent gas mileage?
I tend to get my best mileage under 3000 RPM's. Kinda hard with 4.10's but if I stay at 75 on the Interstate I can get upwards of 23-24 MPG. Above 3 grand and I lose 2-3 MPG.
i just got back from a 5 hour trip about 3 hours ago. i drove at around 85mph the whole time which is about 2800-2900 rpm in my car (4.10's). i got 23mpg on my trip