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    M1 5W20 High Mileage in a NEW car

    Well, I have a stock of the 12QT boxes of M1 5W20HM from the walmart fest last year, 60ish quarts... And a 2K mile 2021 Mustang GT. Would you hesitate to run in in this car? Or maybe just unload the oil cheap on marketplace and run with Castrol Edge or similar, non HM?
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