2008 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 420

418 MAINTAINING YOUR VEHICLE Start the engine and operate it at idle for several minutes. Check for leaks at the lubricating oil filter and oil pan drain plug. Run the engine until it has reached operating temperature, stop the engine. Wait approximately 15 minutes to let the oil in the upper parts of the engine drain back to the pan. Check the oil level again. Add oil as necessary to bring the level to the "SAFE" mark on the dipstick. Disposing Of Used Engine Oil And Filter Care should be taken in disposing of used engine oil and oil filters from your vehicle. Used oil and oil filters, indiscriminately discarded, can present a problem to the environment. Contact your authorized dealer, service station, or governmental agency for advice on how and where used oil and oil filters can be safely discarded in your area. Drive Belt Inspection Check the belt for intersecting cracks. • Transverse (across the belt width) cracks are acceptable. • Longitudinal (direction of belt length) cracks that intersect with transverse cracks are NOT acceptable. Replace the belt if it has unacceptable cracks, is frayed or has pieces of material missing. The engine speed sensor, located near the damper, should be inspected for damage if a belt is frayed.