Fluid change intervals - 335i N55 DCT

[Antman]

Hi all,
Any views on the captioned? I've seen and heard many recommendations that for eg gearbox/diff fluids should be changed at say 50K (whereas BMW claims no need to ever change), engine oil should be changed every say 5-10K (BMW recommended intervals are longer), etc. Clearly this matters a lot for optimal performance and longevity. My car has an intake, charge pipe and JB4 tune, and my driving style is moderate. Thanks.

 

[ffl]

If I'm not wrong, BMW will not stop anyone changing the ATF. PML will do it if their customer asks. I would do at 50k km. Not sure about differential/axle oil as I never had any problem with axle on my BM...

 

[zacsbmw]

My SA told me that ATF only needs to be changed for activehybrid (every 50k km), normal 335i & 535i doesn't require such changes.

 

[Antman]

Thanks guys.
Ffl - agree, I will probably do the same now at high40s or at next service, and probably drop oil every 10 at max, and do diff at some stage (small fix anyway).
Zac - aware of the standard line, think they are moving away from it, won't go into my theories on why they'd say lifetime but it cannot be logical/optimal. Suggest you Google topic and gauge for yourself.
I'll report back once change on impact.