Where are you getting your information frommarioz4 wrote: ↑Thu Sep 19, 2019 11:33 am
Had long chat and did research, YES dif oil needs regular changing, this life time b*** s**** from bmw is basically life of dif some 100k+ but if you chnage oil on 50k or even 30k dif will last 10x time than original BMW "lifetime". Same for transition oil, regular chnage is needed. Problem occur when you change oil first time on high mileage then new oil dos more damage than if you just leave it as it is.
So two options, changing each 30-50k to have long life or not changing at all and as such your gear box will blow on 100k+ and u will need a new one or ne wcar something that BMW wants to happen. My gear chnage is much better now with new oil. my is manual
You are stating if you change your gearbox oil every 50k or 30k it will last 10x longer - 1 million miles plus
And if you change it first time at high mileage and then use new oil does more damage - WHY???