2008 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 421

MAINTAINING YOUR VEHICLE 419 Engine Air Cleaner Filter (6.7L Diesel Engines) CAUTION! All air entering the engine intake must be filtered. The abrasive particles in unfiltered air will cause rapid wear to engine components. The condition of the air cleaner filter is monitored by the Engine Control Module. The Electronic Vehicle Information Center (EVIC) will display SERVICE AIR FILTER when service is required. Do not remove the top of the air filter housing to inspect the filter element on your diesel engine under normal operating conditions. The EVIC message SERVICE AIR FILTER could be displayed periodically. This is because engine air flow requirements change based on driving conditions. As the filter becomes more restrictive and air flow requirements increase the EVIC message SERVICE AIR FILTER will be displayed. The message may not be displayed in subsequent drive cycles if the same conditions are not met. The air filter element should be replaced within 250 miles from the first time this message is displayed to ensure proper engine operation during all driving conditions. The air filter housing on your vehicle may also come equipped with a Filter Minder™. This is an air flow restriction gauge that will indicate when the filter element needs to be replaced. CAUTION! Driving with a restricted air filter can cause engine damage. 7