I don't know exactly, my info comes from the old timers that work for me, I'll ask them.Its one thing to push up some piles of snow but actually working one for a long day in the snow is suppose to not be good,I'll do some checking.A side from the wear on an under carriage the traction problem is a big issue especially with 943 as it does not have grousers like a dozer.We used to have a tilt deck trailer to haul our tracked loader around on,you could not use them in bad weather cause when the deck tipped you had no control of the machine as it skated to the bottom.I think that much the same result would occur with an inclined parking lot. A 20,000 lb trackloader will do more damage in this instance than a sliding pickup.