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I put on a Febi tensioner assembly. Oil is Shell Helix Ultra 0w40 which IIRC is LL01.
If I do understand correctly the plastic guides dont "wear out", but more of the get brittle and break off the aluminum base and the chain now runs on bare aluminum, causing noise among other things?
I have the rythmic "dieseling" sound too which at this point I believe are the VANOS seals. I've ordered a Beslan kit to be ready for it if it is.
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04 X5 3.0i auto
03 X5 4.6is
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