Originally Posted By: pbm
Originally Posted By: Danh
The "old " M1 version probably did. It has been a low-calcium formulation for years, which is consistent with Gen2 specs and, iirc, 2018 GM manuals call for GM-branded oil, an oil meeting dexos1Gen2 OR dexos1 Mobil1.
Yes...that's what I was getting at.
I think that someone using Mobil 1 for the last few years was using a DG2 without even knowing it.
I had settled on using QSUD before learning about LSPI and going back to M1 5W30 (and a few other low calcium XOM 5W30s after that).
I broke my long run of M1 changes with d1G2 Pennzoil Gold 5W30 recently, I know it is marketed as "only" a blend but wemay posted a pretty smokin PDS for it a little while back. Wish I knew its NOACK loss, but at least I know it's 13% or below with the dexos license (the M1 oils I had used varied between about 6-10% NOACK loss by various analyses I found online). I would have tried M1 0W30 if I had found a d1G2 jug, but those haven't showed up around me yet...went with the Gold for this winter changes as it may have had the most impressive CCS and MRV test results I have seen for a 5W30.
It's really nice for me to have d1G2 so I can feel good about picking oils that are not XOM...