Quote:
Originally Posted by RMachuca3d
Sludge has been a known issue, which is why everyone is going with shorter OCI.
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Where are all the posts of people finding sludge in their n20 then? You will be hard pressed to find anything. So, no, this not a "known issue" for the n20 -- particularly at the recommended OCI.
I scoured the web and this is all I could come up with:
Sludge, but due to turbo inlet leak -- not the norm:
https://x3.xbimmers.com/forums/showthread.php?t=1289281
Sludge due to a
24,000 mile oil change?!? That doesn't count -- 24K is not the OCI and any engine will have sludge after severe neglect like that.
https://f30.bimmerpost.com/forums/sh....php?t=1276464
One report here, with little detail. This is another used car with unknown history and unknown OCI. It's the ONLY other sludge issue I could find on an n20 not attributed to neglect or a turbo inlet leak. This is an isolated report with little detail -- could easily be due to neglect, like the post above. Which is likely -- since no sludge has been reported with anyone at the recommended OCI.
https://f30.bimmerpost.com/forums/sh....php?t=1023545