bmw recommends dexron3 atf in the manual 5 speed transmissions. you can use any dexron fluid that supersedes 3 such as 4, 5, and 6. i just checked mine for the first time after driving 50,000 miles and there wasnt much fluid left but i filled it with dexron6 and its alot smoother now. sticking with the oem spec fluid is the best thing for the transmissions in our cars. |