Quote Originally Posted by pitbull325
10w30 is what they recommend, I do it all the time with no problems. Less than 3 quarts. Whatever you do, don't put in gear oil!
Reasoning??? Considering I change it as much as motor oil, I ALWAYS use lucas gear oil in the trans. Not one problem. I had grinds before I put lucas in it. I still have them, but not NEAR as bad