I enjoy offroading but whenever i go with this one friend of mine is always telling me to put my automatic 4x4 Blazer(2000) in a 2nd gear. I hav'nt heard of this technique for off roading, even though i know that is helps to put it in a lower gear for driving down hills to save the breaks. my options are D,3,2,1. Which one is best for offroading?