The dealer didn't change the transmission fluid(6AT) since i bought the car from 2009 my car about 50.000 miles,today the service adviser told me no need to change it's a lifetime
, also he told me they only change the fluids for the M/// cars only, also the differential fluid.. I didn't except this stupid term from BMW.
I feel something wrong in the gearbox but i don't know what, my car tuned since 30.000 miles. (jb4 only use map2 no meth no race fuel) the torque not too high.
He told me if there's a clutch slip they will change the whole gearbox and bring a new one.
My questions are...
some people say u shouldn't empty all the old fluid from the GB or it will get damaged
how should i drive the car after the new fluid? some say don't do WOT for about 2000 miles
after how many miles should i change the diff fluid, should i empty it all or just add on the old one
what's the best types of fluids for trans and diff??
I know too much questions, but what should i do i want to learn from ur experiences...