Recommended Fluids andLubricantsFluids and lubricants identified below by name,part number, or specification can be obtained fromyour dealer.Usage Fluid/LubricantEngine OilThe engine requires a specialengine oil meeting GM StandardGM4718M. Oils meeting thisstandard can be identified assynthetic, and should also beidentified with the AmericanPetroleum Institute (API) Certifiedfor Gasoline Engines starburstsymbol. However, not all syntheticAPI oils with the starburst symbolwill meet this GM standard. Youshould look for and use only oil thatmeets GM Standard GM4718M. GMGoodwrench® oil meets all therequirements for your vehicle. Forthe proper viscosity, see Engine Oilon page 380.Engine CoolingSystem50/50 mixture of clean, drinkablewater and use only DEX-COOL®Coolant. See Engine Coolant onpage 389.Usage Fluid/LubricantIntercoolerSystem(4.4L V8Superchargedengine)50/50 mixture of clean, drinkablewater and use only DEX-COOL®Coolant.Hydraulic BrakeSystemDelco® Supreme 11 Brake Fluid orequivalent DOT-3 brake fluid.WindshieldWasher GM Optikleen® Washer Solvent.Parking BrakeCable GuidesChassis Lubricant(GM Part No. U.S. 12377985,in Canada 88901242) or lubricantmeeting requirements of NLGI #2,Category LB or GC-LB.Power SteeringSystemGM Power Steering Fluid(GM Part No. U.S. 89021184,in Canada 89021186).AutomaticTransmissionDEXRON® -VI AutomaticTransmission Fluid.Key LockCylindersMulti-Purpose Lubricant, Superlube(GM Part No. U.S. 12346241,in Canada 10953474).SuperchargerSupercharger Oil(GM Part No. U.S. 12345982,in Canada 10953513). SeeSupercharger Oil on page 385516
