Use BG Synchroshift in your tranny. I have it in my Talon and it shifts better in sub zero temperatures that any of the synthetics I've ever used. There is no need to have to granny shift the first 5 minutes after you head out like I had to with synthetics.
Greg you say stock tranny but is the rest of the vehicle also stock? I wouldn't recommend the BG Synchroshift if the vehicle has been modified. Sure it will probably shift great in the winter, since its so thin but this also doesn't offer proper protection to the tranny. I use to run BG & it was more then likely the cause of a 3-4 slider failure in my tranny.
I don't personally drive in the winter, but the Redline MTL (slightly thinner then MT90) would probably be a good choice?
