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In Reply to: Re: Post 3/2000 Builds Switching to 10w 60? posted by 330xi on August 09, 2001 at 13:21:45:
One of the service reps. told me that someone with an early build M5 (no piston rings) who was supposed to use 10-60 oil changed it himself and used 5-30.Because it is thinner oil, it burned off
and I guess his warning light didn't work.He ruined the engine and had to pay for a new one himself at 27k!