I suggest you use the Google and read some older threads about how 231/242 part time 4x4 works.
Here is one to read from the Google -> http://auto.howstuffworks.com/four-wheel-drive.htm
The other threads are correct, Part-Time 4x4 is for use on slippery surfaces ONLY, such as dirt, mud, snow, 4x4 trails, etc. Do Not use Part-Time on paved roads.
The 242 Full-Time position can be used anywhere, anytime, for as long as you like, because it has an extra differential inside the transfer case to relieve drive-line binding.
Progressive Liberalism: Bringing you new ideas so wonderful, they have to include mandatory participation ......
Originally Posted by Ronald W. Reagan: Government is not the solution to our problem; Government is the problem.