Eric:
I have towed my 3023 5500 miles up and down the National Parks in the Rocky Mountains/Utah/Wyoming and about 6000 miles to Nova Scotia and back. I was in low gear going over Rockies (9700 foot pass) to Great Sand Dunes NP but everyone was going about 40 MPH up that grade so no problem. As indicated, I have the long wheelbase EXT. I run with full synthetic oils in engine, trans, rear axle. I get 15-16 MPG and cruise at 60 MPH / 2500 RPM
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