Ok, Thanks
I do not believe A5/B5 and MB229.5 are compatible.
This is my evaluation so far:
3.2-liter Volvo B6324S5 produced from 2010 to 2016. No changes made in the bearings during production run despite changes in viscosity advice. Full SAPS oil allowed as no need to protect particulate filters.
This is from the 2011 US Owner's manual : "Synthetic oils meeting SAE 0W-30 or 0W-40 and complying with oil quality requirements are
recommended for driving in areas of sustained extremes (hot or cold), when towing a trailer over long distances, and for pro-
longed driving in mountainous areas". Suggested viscosity for normal use : 5W-30.
Not sure what oil quality requirements means. Perhaps it means synthetic ?
My owner's manual (2013) no longer lists 40W as an option. (I believe it's because ACEA A5 does not allow it.) Only allowed viscosity 0-30.
Not sure why the move from 5-30 to 0-30 ONLY, perhaps 0-30 needs better base stocks (price seems to suggest this)?
It appears that engines are not designed to meet ACEA classifications but it's the other way around : oils are formulated to allow existing engines to pass wear testing in the face of increasing fuel efficiency requirements.
So...high quality oil, personally not interested in economy, 0-30W required. It looks like Mobil 0-40 might be ok. Very close to 0-30 and previously "allowed"for this engine.
Please correct me. I do not want to harm my engine!!