Quote:
Originally Posted by man02195
If it was me, I'd stop every couple of hours, let things cool while I get gas/food/pee/take a picture, then get back on the road again. Running on the highway, even varying speeds, won't allow the engine temperatures to rise/fall enough to let the new parts break-in.
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I have heard that today's engine do not need to heat cycle. One of the worse things for any engine, especially during break in, is cold starts, even if the engine is not that cold. Obviously the engine has to be shut off sometime, but in a perfect world the best way to break in a new engine is without shutting it off for 1200 miles, therefore eliminating the minimal oil starvation. Varying load and revs will offer alternate engine temps.