Dear All,
Hope u'all..havent faced what I went thru.
Had to change all the Valve Lifters (locally referred to here) all 24 pcs of em!! Total cost, BND 1500 (incl of garage bill......

)Had to get the ORIGINALS from the local bimmer dealer.
Replaced ones were actual stock. So, that were there for ten years. Anyone, in that age zone of your car, do get them checked and changed. Recommended to change original stuff, please dont go for the OEM's. Cheers.....