Quote:
Originally Posted by bbnks2
If you are talking about LL-01 oils, 30-40wt doesn't make much difference. LL-01 will be within 1-2cSt of each-other and all will be >3.5cP HTHS with low Noack % etc.
Seems like if you believe in what BMW is saying then it's a "damned if you do damned if you don't" situation. Their solution is to run treated bearings that can provide dry lubrication not change oil specs. You're limited in what you can do with oil weight by the tolerances. 0wt is definitely the way to go over 5wt though.
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So it took BMW 2 decades to figure this out ? All they needed is coated bearings ? Or is there another root cause.