2004 Mercury Mountaineer Owner Guide 2nd Printing (Spanish) - Page 539

Maintenance and Specifications 60%, the engine parts could become damaged or not work properly. A 50-50 mixture of coolant and water provides the following: • Freeze protection down to -36° C (-34° F). • Boiling protection up to 129° C (265° F). • Protection against rust and other forms of corrosion. • Enables calibrated gauges to work properly. When the engine is cold, check the level of the engine coolant in the reservoir. • 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). • Refer to the Scheduled Maintenance Guide for service interval schedules. • Be sure to read and understand Precautions when servicing your vehicle in this chapter. If the engine coolant has not been checked at the recommended interval, the engine coolant reservoir may become low or empty. If the reservoir is low or empty, add engine coolant to the reservoir. Refer to Adding engine coolant in this chapter. 227