Would not use synthetic of any type in any engine, number of Duramax and Cummins drivers I know also feel that synthetic oil in their engines leads to higher consumption/leaks. Several went back to DelVac/Rotella and their problems cleared up. I've never used synthetic in any of mine, as I'm not a believer, running Rotella in Cummins since '04, now at 187k have had no problems, uses absolutely none, does get black quickly.
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Today's Featured Article - Magic Moments - by Tyler J. Woods. Magic moments don’t just happen. You have to help them along. This morning, I got up early. It is my day off from my regular workweek and I had a lot of things to do. It’s fall, and with winter coming on, there is a lot of work to do before weather closes in.
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