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Old 10-25-2007, 04:14 PM
Ferdman Ferdman is offline
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Join Date: Aug 2002
Location: Southeastern PA
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Tim, to the best of my knowledge original fill for the 124 cars was 15W40 mineral oil. I run Mobil 1 15W50 in our 124 cars year round without any problems. Mobil 1 15W50 pours at -49 degrees F per the label ... so it shouldn't cause any lifter problems.
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