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Old 07-28-2001, 09:25 AM
DSinger DSinger is offline
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Join Date: Apr 2000
Posts: 530
The Mobil 1 prefils are indeed 0W-40. Only some dealerships have this oil. I wish I could get my hands on some.

I just recently used the Valvoline SynPower 5W-40 and found I vastly prefer Mobil 1 15W-50. The Valvoline causes the oil pressure to be a hair low at idle for some reason. I'm not sure that's anything bad, but I don't necessarily like it.
1988 Mercedes-Benz 260E
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