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      12-25-2012, 08:16 PM   #6
Warriortogo
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Drives: 2011 Z4 35is 2008 135i
Join Date: Apr 2012
Location: CA HK UK


Posts: 49
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Quote:
Originally Posted by 135iDCT
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...

thanx...
I changed two time already. First time, change oil only in 30000 km. and second time change oil and filter in 80000km.
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2011 Z4 35is Alpine White DCT Alcon BBK KW V3 Supersprint Exhaust Procede
2008 135i Le Blue Alcon BBK JB4 Hartge Exhaust H&R Sway Bar M3 Suspension Forge DV Forge FMIC H&R premuim damper Kit