The 'miles to empty' is a gauge on when you need to refuel - but not completely accurate to calculate actual mileage... it adjusts assuming your current driving conditions continue till end of tank...
In my car I can start a trip with 60 miles to go - get on the highway for 30 miles and still have 45 miles to go...
I'd suggest filling tank and recording odometer - then compare at next fillup and calculate actual mileage.
Your RPMs sound about right... I'd expect slightly better mileage if not towing.
2014 Hurricane - I've gotten about 8mpg not towing and in the 6-7 range when fully loaded (close to max weight) and towing approx 4000 lbs (and not all flat...) Haven't calculated this last long trip yet. (I also don't typically stay at 60-65 unless weather/road conditions are bad... I know I pay a price for that too.)
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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