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Not as good as I'd like
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Posted by Eiron [Email] (more from Eiron) on Mon, 14 Jun 2004 12:03:52 Share Post by Email
In Reply to: Did you have a lousy wear report with the 0W-40?, DouglasKeith, Sun, 13 Jun 2004 20:56:47
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And certainly not as good as zeke's M1 15W-50 turbo report. zeke's report is linked in my previous post, & my report is linked here. The 0W-40 oil itself looks like it's still in pretty good condition at this length of use, but I think I'll stick with 10,000 mile intervals on my turbo for now. However, to be fair, I really did have a lot of stuff going on during that entire interval. And since it was my first-ever run of Mobil 1 (& analysis reports), I don't have any comparison data for my specific car.

Yes, you can mix viscosities w/o problems with all current oils. Since the actual viscosity result is slightly lower than the arithmetic average of the two numbers, I'd expect something like a 7W or 8W on the low end & 42 or 43 when it's hot. I'm really not concerned about the hot end being too thick, since the turbo's best protection comes from maintaining a film of oil at temps over 400°F & impeller speeds of 100,000+ rpms. My bigger concern is the cold flow in the winter. When it gets down to 0°F, I don't want to worry that my wife & kids are stuck with a car that won't turn over.

posted by 146.82.1...

My M1 0W-40 UOA

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