Initial Inspection and Diagnostic Overview

The Engine Coolant Level (ECL) should be checked frequently and kept at the proper level. ECL should be checked with the engine at normal operating temperatures. When coolant must be added, do so at the reservoir (not at the radiator), unless the reservoir has been emptied by a large coolant loss. When this happens, let the engine cool, then add coolant to both the radiator and the reservoir. When adding due to a loss of coolant, use a 50/50 mixture of water and ethylene glycol antifreeze. For freeze protection at temperatures less than -37° C (-34° F), add pure ethylene glycol antifreeze until the desired freeze protection is reached (up to maximum 70 percent concentration in overflow reservoir).

WARNING: Under some conditions, the ethylene glycol in engine coolant . is combustible. To help avoid being burned, do not spill antifreeze or coolant on the exhaust system or hot engine parts.

Do not remove the radiator cap when the radiator is warm. Removing the cap immediately lowers the boiling point of the coolant, and can cause violent overflow. This could result in a large coolant loss and possible personal injury.

CAUTION: Antifreeze can be added to raise the boiling point of the coolant, but too much will affect the freezing point. Do not use a solution stronger than 70 percent antifreeze, as the freeze level rises-rapidly after this point. Pure antifreeze freezes at -22° C (-8° F). To ensure the right engine cooling and freezing protection, maintain the protection level to at least -37° C (-34° F), or at a 50/50 mixture of ethylene glycol antifreeze and water.