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Ron Stygar Carl Buckland Dale Beuning Forums Help
From digest.v7.n518 Fri Oct 31 03:05:34 1997 Rishi, last winter I notice the same stiffness in my 92/E36. I asked around at my local BMW shop and at some other reputable Euro car shops. I recieved mixed reactions to what may be the cause. My car had developed a slight "chunk" when shifting to second gear. I thought if I replaced the fluid with a synthetic it may go away. One shop told me that this most likly would not work. My BMW shop stated that it may help but thought I may be just paranoid because the car was just new to me. I took my car to a friend of mine that runs a Lube shop. He drained the trans only to find it loaded with Automatic Trans fluid. The Shop manual stated that if a red tag was affixed to the bell housing that GL-40 type lube should be filled in the transmission(Red tag on my BH). My BMW shop stated that this may be the case since the car was serviced there and they have been loading ATF in to all of these transmission types. At any rate we placed Mobil 1 Synthetic GL into the case and I drove it for a day only to find it worse and "chunking" in every gear. We then drained it and filled the case with Mobil 1 Synthetic ATF. The difference was astounding. The gears just seemed to snap in to place with a smoothness I thought was only found in Hondas, only better! I do notice, now that it is cold here in Canada, that the Trans is stiffer when first starting out but deminishes quickly within a few city blocks. Even at -40C my trans is smoother than it was with regular ATF at -10C. I would definitly recommend the change to a Synthetic over the standard petro lube. Good luck....
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