2000 Lincoln Navigator Owner Guide 1st Printing - Page 185

Maintenance and care ENGINE COOLANT Checking engine coolant Your engine's cooling system has been factory-filled with a 50/50 mixture of distilled water and Ford G05 Engine Coolant (yellow in color) per ford specification WSS-M97B51-A1. A 50/50 mixture of distilled water and Ford G05 Engine Coolant provides: • maximum cooling system efficiency. • freeze protection down to -36° C (-34° F). • boiling protection up to 129° C (265° F). • protection against rust and other forms of corrosion. • an accurate temperature readout from the engine coolant gauge. The engine coolant must be maintained at the correct fluid level and concentration to work properly. If the engine coolant fluid level and concentration is not maintained correctly, damage to the engine and cooling system may result. When the engine is cold, check the level of the engine coolant in the reservoir. COLD FILL RANGE • The engine coolant should be at the "cold fill level" or within the "cold fill range" as listed on the engine coolant reservoir (depending upon application). 185