[///M Power-Belgium]

Originally Posted by dc5s

First two videos are a cold-ish start. you can see the temp gauge still have some residual oil temp from my earlier drive home. the noise is not apparent at idle or when revving.



These second videos are after a drive around the block to normal operating temp. the noise is apparent at idle and revving. the frequency of the noise increases when revving.



it's hard to say whether the noise is coming from the top or bottom of the engine.

the only change from yesterday and today (first time hearing this noise) is changing from BMW oil to LM.

UPDATE: I did another oil change tonight and put in BMW 10W60 oil. All noises are gone.

# 3 on this page => http://www.m3post.com/forums/showthread.php?t=1404625