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I run Rotella 15-30 in winter, and 15-40 in summer. Only oil I use, and I drive a ford, so I appreciate oil, heh...
Rotella for sure Advance Auto has it on sale for 12.99 right now. About to hit 230k on my cummins and It's been ran on Rotella since 100k.
I use rotella in mine, my 2007 just turned 621,000 miles today and she still purrs like a kitten. I traded in my last truck with just over 750,000 on the clock and she was still running strong.