Has anyone used Seafoam Trans Tune or something like that in there transmission. I am having a problem with it not wanting to move when it is cold(Minnesota 15 degrees) and has not been run (over night), It will move slow and revs fast. Once that happens, transmission comes out of the breather. If you start it and let it warm up for 10-15 minutes it works great, shifts very smooth. I have done a fluid change since it happened and worked twice and is now doing it again. It's a 2000 BMW 323ci, steptronic Automatic transmission 153,000 miles.