s65 engine noise

Assimilator1 · 12-04-2022, 08:17 AM

E90_Dave Did you ever get to the bottom of that dull thudding noise?

Avetiso · 12-17-2022, 06:59 PM

Anyone got any ideas?

chenium · 12-17-2022, 09:47 PM

Quote:

Originally Posted by Avetiso

Anyone got any ideas?

I think the general consensus is that this knocking can occur after an oil change and should reduce over time and generally harmless. FWIW, my 2010 e90 also does this at 84k with BE bearings. I had an oil change recently with Redline 5W-50 and have the same knocking sound once the car is at operating temperature.

Avetiso · 12-18-2022, 12:25 PM

Quote:

Originally Posted by chenium

I think the general consensus is that this knocking can occur after an oil change and should reduce over time and generally harmless. FWIW, my 2010 e90 also does this at 84k with BE bearings. I had an oil change recently with Redline 5W-50 and have the same knocking sound once the car is at operating temperature.

Gotcha, I appreciate the information. Sounds like enough people have it without anything failing on them.

12-04-2022, 08:17 AM	#23
Assimilator1 Major 594 Rep 1,026 Posts Drives: BMW M3 e92 08 & 330d e90 10 Join Date: Sep 2019 Location: UK, Surrey iTrader: (0) Garage List 2010 BMW 330d [8.00] 2008 BMW M3 [0.00]	E90_Dave Did you ever get to the bottom of that dull thudding noise? __________________ . Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list.
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12-17-2022, 06:59 PM	#24
Avetiso New Member 13 Rep 29 Posts Drives: 2008 E90 M Join Date: Jul 2014 Location: Salt Lake City, UT iTrader: (0)	Anyone got any ideas?
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