Quote:
Originally Posted by Tiss'er
My manual for the 2018 LCI only states 0w-30 as the approved viscosity. For this reason I have ordered German Castrol 0w-30. I am questioning this being in AZ though as maybe I should try LiquiMoly 5w-40
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For me (pre LCI 2017 BMW m2) my manual has zero mention if viscosity and says to contact a service center for more detail.
I'm pretty sure 0w40 would be fine especially since you're in a pretty hot climates year round, but use it at your own risk.