Originally Posted By: wemay
Same 2.0T in my SFS. M1 5w30 will be just fine. I've used Edge 5w30 or 0w40 and Synpower in 5w30 or 10w30, each to 5k miles. Currently using Valvoline Conventional (VWB low calcium) in 5w30 (to 3k miles since now in severe svc that school traffic started). There has been some dicussion reference high Calcium oils contributing to low-speed-preignition. So your choice of M1, which is low Calcium, may be beneficial beyond your inquiry.
This SAE study has been dicussed at length before...
http://papers.sae.org/2014-32-0092/
But now, through Pennzoil's Q & A, the topic came up again and they have answered it this way. Remember, SOPUS oils are rather laden with CaSa...
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3836844/Pennzoil_Answers-Complete_Prot
Q: Could you address operators of GDI-Turbo vehicles regarding the effects of certain additives such as calcium and their impact on LSPI (low speed pre-ignition)? There's much discussion and concern by operators of these vehicles that Pennzoil's additive packages are predisposed to LSPI as compared to other brands.
A: Low speed pre-ignition (LSPI) is more a phenomenon of engine design – and as you mentioned, occurs more frequently in gasoline direct injection (GDI) turbocharged engines. It is really a phenomenon for prototype or experimental engines that are still in the Research & Development phase, and oils with high levels of calcium-based detergents can increase LSPI frequency. HOWEVER, by the time the engine is fully designed and released to the market, it must be compatible with the available motor oils in the marketplace. Thus said, there is no need for concern.
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What's your level of oil consumption? If it's negligible, then what would be the point of a low Ca oil? Furthermore, of the amount of oil consumed, what's the percentage of additive package contained, in the case of oil let past the oil control ring or in vapor form via PCV?