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Old 03-15-2008, 02:49 PM   #11
Cloudsurfer
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Join Date: Jan 2007
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I just ran M1 0W40 7000 miles, and the Blackstone analysis showed I could have gone longer. Wear metals were extremely low, no fuel dilution, no coolant in the oil, viscosity was right where it should be. I think 10,000 is safe but I'm not sure I'd push it much past that.

Patrick
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