2003 Hummer H2 Owner's Manual - Page 425

Part D: Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. USAGE Engine Oil FLUID/LUBRICANT Engine oil with the American Petroleum Institute Certified for Gasoline Engines starburst symbol of the proper viscosity. To determine the preferred viscosity for your vehicle's engine, see "Engine Oil" in the Index. 50/50 mixture of clean, drinkable water and use only DEX-COOLR Coolant. See "Engine Coolant" in the Index. USAGE Windshield Washer Solvent Power Steering System Automatic Transmission Key Lock Cylinders FLUID/LUBRICANT GM OptikleenR Washer Solvent or equivalent. GM Power Steering Fluid (GM Part No. U.S. 1052884, in Canada 993294, or equivalent). DEXRONR-III Automatic Transmission Fluid. Multi-Purpose Lubricant, SuperlubeR (GM Part No. U.S. 12346241, in Canada 10953474, or equivalent). Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242, or equivalent) or lubricant meeting requirements of NLGI # 2, Category LB or GC-LB. Engine Coolant Chassis Lubrication Hydraulic Brake System Delco Supreme 11R Brake Fluid or equivalent DOT-3 brake fluid. 7-22