Olympia Wa. to Phoenix Az. In Dec.
Looks like I will need to drive my F550 back from Olympia Washington This Dec. seems I5 is the flattest route but I believe there are a couple mountain passes. Any suggestions from those that have ...
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Something to keep in mind is to lower the air pressure in the rear duels, to 35 psi to 40 psi if running empty, far better traction and enough pressure to support the empty rear end.
