Gear Oils We can provide a range of gear and diff oils: MasterGear GL-5 75w90, 80w90, 85w140 MasterTrans TO-4 10w, 30w, 50w Road Ranger 50 Master LS90 GL-5 Synthetic Gear GL-5 75w90, 80w90, 80w140 Bizol Synthetic Gear GL-5 75w-90