except for winter in cold climates. M1 0W40 is a fine oil, but its high temperature-high shear viscosity is right at the margin for a 40 weight. The OG 9-5 runs higher than usual (for Saab) oil temperature to reduce sludge, and therefore the higher HTHS found in M1 10W40 seems like a better fit. It also claims an additive package with more cleaning agents and seal conditioners which, if true, are a plus for older 9-5s.
posted by 24.165.160...
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- Using Mobil1 10W-40 vs 0W-40?, Wil W , Tue, 26 Jun 2012 12:42:06
- Better, IMO, Stephen Goldberger, Wed, 27 Jun 2012 04:47:54
- Re: Using Mobil1 10W-40 vs 0W-40?, PSB, Wed, 27 Jun 2012 03:03:40
- I started using it in my '00 9-5 as it, MikeVT , Tue, 26 Jun 2012 14:57:55
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