2004 Chrysler Concorde Owner Manual - Page 214

214 MAINTAINING YOUR VEHICLE • Maintain coolant concentration of a minimum of 50% ethylene glycol and high quality water with recommended antifreeze for proper corrosion protection of your engine cooling system that contains aluminum components. • Make sure that the radiator and coolant bottle hoses are not kinked or obstructed. • Keep the front of the radiator and air conditioning condenser clean. • Do not change the thermostat for summer or winter operation. If replacement is ever necessary, install ONLY the correct type thermostat. Other designs may result in unsatisfactory engine cooling performance, poor gas mileage, and increased emissions. Hoses and Vacuum/Vapor Harnesses Inspect surfaces of hoses and nylon tubing for evidence of heat and mechanical damage. Hard or soft spots, brittle rubber, cracking, checking, tears, cuts, abrasions, and excessive swelling indicate deterioration of the rubber. Pay particular attention to those hoses nearest to high heat sources such as the exhaust manifold. Inspect hose routing to be sure hoses do not touch any heat source or moving component that may cause heat damage or mechanical wear. Insure nylon tubing in these areas has not melted or collapsed. Inspect all hose connections such as clamps and couplings to make sure they are secure and no leaks are present. Components should be replaced immediately if there is any evidence of degradation that could cause failure. Brake System In order to assure brake system performance, all brake system components should be inspected periodically. Suggested service intervals can be found in Section 8.