1998 GMC Sonoma Owner's Manual - Page 370

~~ Part D: Recommended Fluids and Lubricants NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. USAGE Hydraulic Brake System FLUIDLUBRICANT Delco Supreme 11 Brake Fluid (GM Part No. 12377967 or equivalent DOT-3 Brake Fluid). @ USAGE Engine Oil FLUIDLUBRICANT 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. Hydraulic Clutch Hydraulic Clutch Fluid (GM Part No. 12345347 or equivalent System DOT-3 Brake Fluid). Power Steering System Manual Transmission with V 6 Engine Manual Transmission with L4 Engine GM Power Steering Fluid (GM Part No. 1052884 - 1 pint, 1050017 - 1 quart, or equivalent). Synchromesh Transmission Fluid (GM Part No. 12345349 or equivalent). Manual Transmission Fluid with 5% friction modifier. (GM Part No. 12377916). Engine Coolant 50/50 mixture of clean water (preferably distilled) and use only GM Goodwrench@ DEX-COOL@ or Havoline@ DEX-COOL@ Coolant. See "Engine Coolant" in the Index. 7-48