Originally Posted by Tra1969
Mine goes back to the shop tonight. Took my road trip to kasas city from Michigan. 4 tanks all highway and cruise control at 70 mph. Got 31.3 to 33.8 on all four tanks. Ouch! That's not 40 mph. We will see what they say this time.
It's winter, so take that into account, and 70mph is not optimum for fuel efficiency. You're numbers are quite good considering.