2005 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 361

MAINTAINING YOUR VEHICLE 361 of the exhaust system abnormally contacts the underbody hardware, the isolator and/or hanger should be replaced. Cooling System Cooling System Maintenance At the intervals shown in the Maintenance Schedules Section of the manual, the system should be drained, flushed and filled. Inspection Check engine coolant (antifreeze) protection every 12 months (before the onset of freezing weather, where applicable). If coolant is dirty or rusty in appearance, the system should be drained, flushed and refilled with fresh coolant as specified. Inspect the entire cooling system for leaks. Check the face of the radiator for any accumulation of bugs, leaves, or other foreign matter. If dirty, clean the radiator core with a garden hose. With the engine OFF, gently spray water from the back of the radiator core. Check coolant bottle tube for condition and tightness of connections at coolant bottle and radiator. Extremely cold ambient temperature may require the addition of a "winter front" for effective operation of the cab heating/cooling system. Make certain that a percentage of the radiator is exposed for adequate air flow through the charge air cooler and automatic transmission oil cooler. The percentage of opening must be increased with the increasing ambient air temperature and/or engine load. If the cooling fan can be heard cycling frequently, increase the size of the opening in the winter front. Coolant bottle level check The coolant reserve system provides a quick visual method of determining that the coolant level is adequate. With the engine idling, and warmed to the normal 7