Quote:
Originally Posted by Leonardo629
Let me ask again, possible 0w40 testing? It will add a lot of insight to why BMW chose 10w60.
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It's a long shot. The oil flow sensor is temperature and viscosity calibrated to the specific oil in use. Extra calibrations cost extra. I think we bought three calibrations, but not sure what they were. Regardless, this already takes up a huge amount of time, and not sure we're willing to go for round #3.