Love my truck and camper.
222813 miles 6.0L 3.73:1 Averaging 10.4 mpg carrying my 4000 lb camper. (10,540 lbs total) Still doesn't use a drop of oil between oil changes that have been done every 5000 miles. St...
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MORSNOW wrote:specta wrote:
The perfect cruising speed for my truck & camper.
MPG consistently over 10 mpg. I'm happy. :B
This spring I did a 540 mile trip here in Idaho with the cruise set at 70 on my 2012 GMC 6.0 gasser and averaged a surprising 10.5 round trip. I really thought going that fast with the high RPM would kill my mileage, but it was similar to what I was getting at 55 in Alaska.
They seem to like 2500 rpm. I'm quite happy with the 10+ mpg.
