My Eaton Truetrac calls for a GL-5 80w90 Non-Synthetic Gear Oil with no friction modifiers. What brands and types are you guys using in your Trutracs?
I used the 85-140 as Brian said but when I changed all I had was the 80-90 It was the Napa 85-140 #75-211
BRANDs - I stay away from STP and Valvoline. NEVER never buy gear oil with ADDITIVE already installed. YOU NEVER know the ratio. Also Brand on Additive - seems Auto zones Posi X or Trans X something like that in a tooth paste tube is terrible too.' Lucas seems pretty good even WALMART brand we have never had issues with and I even have it in the 10 sec race car. Soooo. There you go . More for you to chew on. Jim JD Race