1998 GMC Suburban Owner's Manual - Page 408

Part D: Recommended Fluids and Lubricants NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. I USAGE Engine Oil (Gasoline Engine) I 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 water (preferably distilled')and use only GM Goodwrench@ DEX-COOL@ or Havoline' DEX-COOL@ Coolant. See "Engine Coolant" i n the Index. Transmission ransmission Fluid. ~ Engine Coolant 7-44