Cooling System: Service Precautions
ENVIRONMENTAL AND SAFETY CONCERNSEnvironmental Concerns
- Used engine coolant is a controlled waste and should be disposed of properly.
- Used engine coolant contains Ethylene Glycol and trace amounts of lead and other heavy metals which are extremely hazardous and lethal to humans and wild life. Children and pets are attracted to it because of its sweet smell and taste. See a doctor or veterinarian immediately if any amount is ingested.
- Do not pour used coolant into storm drains or sewers.
- Do not mix used coolant with liquid hazardous wastes, such as used engine oil, transmission fluid, or brake fluid. Many waste disposal facilities will not except used coolant when mixed with other wastes.
Safety Concerns
WARNING! To avoid personal injury when working on the cooling system, observe the following:
- Hot coolant can scald. Do not work on the cooling system until it has fully cooled.
- At normal operating temperature the cooling system is pressurized. Allow the system to cool as long as possible before opening - a minimum of an hour - then release the cap very slowly to allow safe release of pressure.
- Releasing the cooling system pressure lowers the coolant's boiling point and the coolant may boil suddenly. Use heavy gloves and wear eye and face protection to guard against scalding.
- Use extreme care when working at or near the cooling fan when the engine is hot. The fan can come on at any time - even if the ignition key is off. To avoid personal injury use extreme caution when working at or near the cooling fan if the engine is hot. As a safety precaution, always disconnect the harness connector from the fan when working in the engine compartment.