average GPM concerns
OK so I took my first trip that was more than 40 miles down the road. My 2000 F150HD 5.4L gas and the drive train in the truck are rated for 8700 towing, my 5ver was at approx. 7600, I was hoping for ...
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patnchris wrote:
I find this very interesting. I am towing the trailer in my sig. It is around 7800 -8500 lbs. I tow with a 2007 F150HD, 5.4. 373 gear. I tow with OD off at around 65 mph and almost never use cruise. In approx 6000 miles towing, over the last two years, I am averaging right at 10 mpg. I did switch all lubes to synthetic, but wouldn't think it would make that much difference. Is it possible that keeping the 5.4 closer to it's power band makes a difference. Usually runs around 2500 rpm.
Have you checked to make sure your odometer is accurate? I check my odometer using the mile markers on the interstate. I once had a new Chevy that had an odometer that logged more miles than I had actually traveled. I thought I was getting great gas miles until I figured out the odometer was not correct. It appeared to be setup for a truck with 17" tires and my truck came with 16" tires.
