2013 Jeep Grand Cherokee Owner's Manual - Page 632

630 MAINTAINING YOUR VEHICLE Please note that it is the owner's responsibility to maintain the proper level of protection against freezing according to the temperatures occurring in the area where the vehicle is operated. NOTE: Mixing engine coolant (antifreeze) types is not recommended and can result in cooling system damage. Drain, flush, and refill as soon as possible to avoid damage if coolant types are mixed in an emergency. Cooling System Pressure Cap WARNING! • The warning words "DO NOT OPEN HOT" on the cooling system pressure cap are a safety precaution. Never add engine coolant (antifreeze) when the engine is overheated. Do not loosen or remove the cap to cool an overheated engine. Heat causes pressure to build up in the cooling system. To prevent scalding or injury, do not remove the pressure cap while the system is hot or under pressure. • Do not use a pressure cap other than the one specified for your vehicle. Personal injury or engine damage may result. The cap must be fully tightened to prevent loss of engine coolant (antifreeze), and to ensure that engine coolant (antifreeze) will return to the radiator from the coolant recovery tank. Disposal Of Used Engine Coolant The cap should be inspected and cleaned if there is any Used ethylene glycol-based engine coolant (antifreeze) is accumulation of foreign material on the sealing surfaces. a regulated substance requiring proper disposal. Check with your local authorities to determine the disposal