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Anybody tried Mobil1 0w-40 in 960? 900

posted by  Volvodad on  Mon Jun 21 14:54 CST 2004
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last visit: Thu Oct 23 16:18 CST 2014
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Mobil-1's 0W-40 has about 40% higher viscosity at 100C than their 10W-30. Oddly, despite the "0W..." low temp rating, its 40C viscosity is also significantly higher than the 10W-30. I'd call it a warm-to-hot climate oil, for higher mileage engines, with better initial startup lube capabilities than the 15W-50. But I would not recommend using it in cold weather.

When you note that Volvo recommend ordinary 10W-30 for everything except extreme duty (like trailer towing in hot weather), and for those extreme duty conditions, they recommend 15W-40 or synthetic, it sounds like there would be very little high-temp advantage to synthetic 0W-40 over 10W-30. And the 10W-30 covers you better in 'cold' starts, which is where the engine sees its worst conditions of marginal lubrication.
--
Bob (son's 81-244GL B21F, dtr's 83-244DL B23F, "my" 94-944 B230FD; plus wifemobile Dodge minivan, hobbycar MGB, and numerous old motorcycles)






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