2008 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 414

412 MAINTAINING YOUR VEHICLE WARNING! To maintain your vehicle safely and avoid personal injury, follow these guidelines: • Never spray or pour diesel fuel, flammable liquid or starting fluids (ether) into the air cleaner assembly, air intake piping or turbocharger inlet in an attempt to start the vehicle, unintended engine acceleration may occur. • Do not use alcohol or gasoline as a fuel blending agent. They can be unstable under certain conditions and be hazardous or explosive when mixed with diesel fuel. • If an engine has been operating and the coolant is hot, allow the engine to cool before you slowly loosen the filler cap and relieve the pressure from the cooling system. • To avoid burns, remember that the engine components will stay hot after the engine is shut off. • Do not use gasoline or other flammable materials to clean parts. Always use approved cleaning solvents. • Relieve all pressure in the fuel, oil and cooling systems before any lines, fittings or related items are removed or disconnected. Be alert for possible pressure when disconnecting any device from a system that utilizes pressure. Do not check for pressure leaks with your hand. High pressure oil or fuel can cause personal injury. • Important: All maintenance other than that listed in this manual, as well as some procedures listed here, MUST be performed by your authorized dealer. Your authorized dealer has been trained and has the necessary parts to maintain your engine. WARNING! Do not open the high pressure fuel system with the engine running. Engine operation causes high fuel pressure. High pressure fuel spray can cause serious injury or death. MAINTENANCE PROCEDURES The pages that follow contain the required maintenance services determined by the engineers who designed your vehicle. Besides the maintenance items for which there are fixed maintenance intervals, there are other items that should operate satisfactorily without periodic maintenance. However, if a malfunction of these items does occur, it could adversely affect the engine or vehicle performance. These items should be inspected if a malfunction is observed or suspected.