Currently use M1 5w-30 in this vehicle with 5k changes. I was thinking of trying this oil in this engine on my next change. Thoughts?
When the 2.0T Thetas first came out they were spec'd for 5w40, that was later changed to A5 rated 5w30, most speculation for the reason so centered around on-spec 5w40 being hard to find. I think M1 0w40 would work great in your 2.0T. I bet if you search the Interwebs enough you will find other 2.0T owners running M1 0w40.
I used M1 HM 10w30 in my non-DI 2.4 Theta one time and it had never run quieter. I think the M1 HM 10w30 I used was more than 12cSt IIRC, it was the older A3/B4 rated stuff. I can't see how an additional 1.4 cSt would cause any problems in your Theta.
Too much Calcium in M1 0W-40 for my Turbo/GDI Golf and that's the reason I am staying away from this oil even though it's VW502.00 approved.
INFINEUM on Calcium detrimental effect on LSPI in Turbo/GDI engines.
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