Question about Off-roading and 4x4
I have a 1998 Grand Cherokee with the I-6 and Selec-trac. Im going to be doing some off-roading soon in some sand dunes in Silver Lake, MI. So, my question is what 4x4 mode do i want it in full time or part time. Is one better or worse for the engine? I know i wont need to be in 4-low for sure. Thanks for the help.