Hello Bob,

I too have a 4WDi. I'd have to say that in my experience the 0-35 (maybe 40) is the sweet spot. I have altered my routes to use less highway and have found that in many cases the back way is also shorter.

More to the point, I have been able to stay off the highway so far this tank and am averaging 30.6 right now. A 20 mile trip down the highway at 75MPH would whack that down to probably 27ish in a fat hurry. I tend to 'pulse a little, glide a little' even in mild traffic. As long as the top and bottom speeds are relatively close, say 10MPH apart, it seems to generally doable without inconveniencing other drivers. If you get to your top speed and the car behind you is RIGHT behind you it is probably unlikely you will be able to PnG until he's gone.

Anyhow, good luck. The HiHy is an awesome ride and gas is not getting cheaper.

Happy holidays
-Rodney