The Unofficial BMW M5 Messageboard (m5board.com) - View Single Post - Which type of oil is used for break-in?

Bibendum · 25th March 2006, 16:31

That's weird. I guess some small amount of it will always stay in the engine and will always mix with the synthetic...

25th March 2006, 16:31	#4 (permalink)
Bibendum Member, Sport: On DSC: Off Join Date: Oct 2000 Location: USA Posts: 274 Thanks: 0 Thanked 1 Time in 1 Post	That's weird. I guess some small amount of it will always stay in the engine and will always mix with the synthetic...