Craig in Canada
Thread starter
Regarding the bearings - I was never saying "everyone with an N55 watch out! It's inevitable!". There's a lot more rod bearing chatter about the last decade of BMW engines to begin with, and the E90/F30/F10 community has observed a disproportionate number of 2011 N55s being posted about. Looking around, we can see that short block and some other related part numbers were changed several times around 2011 in much more rapid succession than is typical before and after.
It's all theory, but it was enough to get me off my butt and doing UOAs again - no harm done. I don't believe I need any exotic juice for my bearings, but I do want to ensure appropriate juice is used. If it is particularly good at keeping things clean, that's of significant interest to me.
I might just stop thinking about this and run PP Euro 5W40, but I'm still thinking about PP Euro L 5W30 and ensuring I continue short changes and do UOAs with TBN/TAN check for a bit. I'm happy to see PP Euro well regarded around here which is valuable guidance.
It's all theory, but it was enough to get me off my butt and doing UOAs again - no harm done. I don't believe I need any exotic juice for my bearings, but I do want to ensure appropriate juice is used. If it is particularly good at keeping things clean, that's of significant interest to me.
I might just stop thinking about this and run PP Euro 5W40, but I'm still thinking about PP Euro L 5W30 and ensuring I continue short changes and do UOAs with TBN/TAN check for a bit. I'm happy to see PP Euro well regarded around here which is valuable guidance.