Coolant

Engine Coolant
Use a 50/50 mixture of clean water (preferably distilled) and a good quality Ethylene Glycol Base Coolant (GM P/N 1052753) or an equivalent which conforms to GM Specification 1825M, or an approved recycled coolant which conforms to GM Specification 1825M.

Notice
Alcohol, methanol-based coolants or plain water alone should not be used in the cooling system at any time. Damage to the cooling system could result from their use.

Important
Maintain the cooling system protection at -36�C (-33�F). This temperature will prevent corrosion and loss of coolant from boiling. Maintain this level of protection even if extreme temperatures are not expected.
The manufacturer fills the cooling system with a coolant that is a 50/50 mixture of water and ethylene glycol coolant. This coolant solution provides freezing protection to -36�C (-33�F). Add ethylene glycol coolant to the coolant reservoir when the coolant level is low.