Re: 6.5 mpg towing????
Loaded with the trailer and 2- F-550's you have to be around 30k gross. I average around 7-8mpg loaded to 40k gross, depending on the terrain, but thats with 4.88's and Jody's 60 or 80 tow tune. The worst I've ever gotten was 6, but that was pulling the GN with a 680 Case backhoe from NJ back to OH through some nice hills. I'd try Jody's 40hp tow tune to start and work from there.
2000 F-550 CC, 2wd, 6 speed. Homemade bed, 5" exhaust, DP chip, water inj, intake, gauges, ect
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