So, all 4WD trucks and SUVs that don't have AWD state that you should not drive on dry pavement in 4WD High. But, when driving in snowy conditions, especially in the mountains, sometimes the roads are blowing snow, ice, but mainly flat. It is exactly at these times when you need the 4WD most, however, i get mixed signals on exactly when you can use it. It almost sounds like 4WD high is not really helpful for highway snow driving. since i'll be driving from Miami, FL in to Bonne, NC mountains this coming weekend and then going up US-74 W to Ellijay, GA i would like to put it in 4WD and drive over 45- 65 MPH on icy roads if there is any, but not always fully covered with snow...like patches of snow, clear, ice, patches, ice, etc. Any insight on the correct use of 4WD high would be useful, but i have read the manual and it says not to do that. Thanks for the input.