The 7.3s are work horses designed to be pushed. There is no reason to baby them. Since the auto trans is only a 4 speed, you should rev them into their power band which is really between 2 and 3 thousand rpm. 2500 rpm is good for long hills in the appropriate gear. If it hunts for gears, select the lower one. I've had mine for 20 years now and I used 'be gentle' until I realized that was just the wrong way to use it.
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Dan and Rita
Prefer not to be hooked up in a RV park
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