I need to make a couple of 2 hour trips coming up and I’d sure like to take the Mo I’m supposed to be picking up tonight. I’ve read all the posts about varying the RPMs during the first 1500 miles. I was wondering if varying my speed from 60 to 80 and employing Ds on and off would vary my RPMs enough to allow me to take the Mo on the highway before the 1500 mile mark.