2012 Jeep Grand Cherokee Owner Manual - Page 600

598 MAINTAINING YOUR VEHICLE accumulation of bugs, leaves, etc. If dirty, clean by gently Cooling System - Drain, Flush, And Refill spraying water from a garden hose vertically down the If the engine coolant (antifreeze) is dirty and contains a considerable amount of sediment, clean and flush with face of the condenser. reliable cooling system cleaner. Follow with a thorough Check the engine cooling system hoses for brittle rubber, rinsing to remove all deposits and chemicals. Properly cracking, tears, cuts, and tightness of the connection at dispose of the old engine coolant (antifreeze). the coolant recovery bottle and radiator. Inspect the Refer to the "Maintenance Schedule" for the proper entire system for leaks. maintenance intervals. With the engine at normal operating temperature (but not running), check the cooling system pressure cap for Selection Of Coolant proper vacuum sealing by draining a small amount of Use only the manufacturer's recommended engine coolengine coolant (antifreeze) from the radiator drain cock. ant (antifreeze). Refer to "Fluids, Lubricants, and GenuIf the cap is sealing properly, the engine coolant (anti- ine Parts" in "Maintaining Your Vehicle" for further freeze) will begin to drain from the coolant recovery information. bottle. DO NOT REMOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.