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    Castrol Edge 5W-50 UOA after 4 hours on the track in a Mustang GT

    Longtime lurker, first time poster. Thought you folks might be interested in some of the oil testing I’ve been doing with my 2019 Mustang GT. I’ve done a series of long drain interval, ~10k miles, tests using various 5W-20 oils but that info is going to take some time to put together so I...
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