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      07-28-2020, 01:33 PM   #11
patchesj
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Drives: BMW M6
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I don't think there would be any negative impact, other than false high measurements of additives.

I've noticed a significantly quieter engine as well after moving from Castrol 5-30 to Molygen 5-40. I thought it was in my head, but sounds (no pun) like maybe not.