So while talking to a customer about servicing his transmission on his 07 335i, he mentioned that last week a service advisor from a local bmw dealership told him that he should never service his transmission. The reason he should never service his trans is because " the fluid gets better with age" and " the fluid has special chemicals that breakdown and dissolve any shavings that come from the transmission."
I dont know about you guys but i NEED some of THAT fluid. We laughed about it for a few minutes and then i replaced his leaking transpan and changed the fluid. He no longer has magic fluid and now will change it every 30k since it wont dissolve the metal.