|
10w60...
10w60 is recommended for most BMW M engines. From what I have read in normal use (street use) it makes little distance, but in demanding track use with extended high rpm’s, it provides proper lubrication. My high rpm S54 has run this viscosity for 13 years with no issues.
There are numerous testimonials where the proper spec 10w60 has “quieted down” a noisy M drivetrain after heavy track use with a thinner spec oil. The assumption is that extreme heat causes internal clearances to expand enough to “need” the higher viscosity.
After a proper break in with conventional oil, I will probably use Liqui Moly 10w60 in my ‘82 SC after I rebuild it - a personal choice, just use what you want and deal with any consequences of the decision...
|