Just something to keep in mind. If you are thinking of shifting into four wheel drive for bad roads on the highway I would think again. I have seen way too many 4x4 on there sides, because they where going above 40MPH while on highway. When in four wheel drive and you hint an icey spot the vehicle goes into a spin ( 360 ) before you know it. On highways it is safer to stay in 2 WD, You may slide but are less likely to do a 360.