Coolant
ENGINE COOLANTA 50/50 mixture of clean drinkable water and use only GM Goodwrench(R) DEX-COOL(R) or Havoline(R) DEX-COOL(R) (orange-colored, silicate-free) coolant, conforming to GM Specification 6277M.
CAUTIONS:
^ If silicate coolant is added to the cooling system, premature engine, heater core or radiator corrosion may result. In addition, the coolant will require change SOONER, at 50,000 km (30,000 miles) or 24 months.