2005 Chrysler PT Cruiser Owner Manual Convertible - Page 273

MAINTAINING YOUR VEHICLE 273 With the engine at normal operating temperature (but not running), check the cooling system pressure cap for proper vacuum sealing by draining a small amount of coolant from the radiator drain cock. If the cap is sealing properly, the engine coolant (antifreeze) will begin to drain from the coolant recovery bottle. DO NOT REMOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT. Cooling System - Drain, Flush and Refill At the intervals shown on the Maintenance Schedules, the system should be drained, flushed and refilled. If the solution is dirty and contains a considerable amount of sediment, clean and flush with a reliable cooling system cleaner. Follow with a thorough rinsing to remove all deposits and chemicals. Discard oil antifreeze solution. Selection Of Coolant Use only the manufacturers recommended coolant, refer to Recommended Fluids, Lubricants and Genuine Parts for correct coolant type. 7