Thanks for all the advise on my engine oil question. Now I am wondering if I should put in synthetic transmission fluid when I loan my 88 Ford Festiva to someone in Edmonton this winter. It can get to 40 below. My first concern is that it will start, and I intend to us synthetic engine oil, a battery warmer, and probably an engine/block heater of some sort. I'm guessing that the transmission fluid consistency is pretty much irrelevant to starting ease, but related to initial driveability. Is it worth worrying about> Thanks