Absoluteley not required. That is an old story of M52/M54 motors, not on N52's.
If you dont mind me asking, why are you removing the DISA? Any issues leading you to this? Just interested.
Hi Nodzed no issues car runs sweet, however after reading and seeing how they can fail/have play in the mechanism I was looking at prevention rather than wait for a fail. My problem is I also run Classic Triumphs and tend to over service add that to the fact I am new to Z4 / BMW and unsure of what damage things like the DISA valve can do if it fails (herd it said it can be catastrophic) its just what I do. I guess I should ask you guys on the forum before I get carried away as even though the car has a good service history I have still service it including engine gearbox and diff oil, so advise always welcome.
Just had a read of the link and will not bother taking it out just yet thanks very much for the information.
I don't think there's much of an issue with the N52, but if you do have a gander at it please post your findings up on here, us e89 owners are always interested in maintenance info.
There is an access panel to get to the engine drain plug. Gearbox is straight forward but you will need to remove the side heat shield to get access to the plugs if memory serves me. Diff is a pain in the arse, no drain plug, so you will need a pump or a syringe, I used a pump to drain but it was painfully slow so used the oil syringe to refill, definitely use the syringe to drain if I do it again. You will need to remove the diff brace too, easy enough to remove though.
Yeah thanks I done those, what about the vanos solenoids is it worth servicing/replacing them or wait until they need attention, otherwise I think I am all Done for the summer unless you can recommend thing that should get done but get forgotten.
Sorry thought you still had those to do......Again dont think the Vanos is an issue on these but happy to corrected. Lube all the roof joints with white lithium grease I used WD40 spray lithium. Some say change the salmon relays in the boot not sure I agree but it's a common thing. Pollen filter is worth a visit. And keep an eye in your boot in the battery area for water they can leak and your roof solenoid are in there.
