Ive got my E39 M5 in the workshop for a major mechanical refresh. Its been sitting about in the garage like a wannabe garage queen whilst I have been driving newer cars.
Anyway, this lockdown nonsense has given time to reflect so I have decided that she is the only one, no more messing with younger models!
Enough chatting nonsense, rod bearings are being done 100% as the internet told me so but my concern is the timing chain guides.
The garage have done a vanos test and have advised doing the timing chain as the parameters are out a tiny bit on the exhaust side but "nothing to worry about"
Is this a "must do" job like the rod bearings or not?????