It is snowing where I live with 3-7 inch totals. I have a part time 4wd option and a full time 4wd option. What option should I use? I don't have much experience because it doesn't snow all that much in the South East. How many miles per hour should I drive on full time 4wd and how many miles per hour should I drive on part time? I think in order to change it from part time to full time 4wd I have to be going 3 to 5 mph, I just need some clarification on that? I also drive a stick shift.