2005 Dodge Magnum Owner's Manual - Page 286

286 MAINTAINING YOUR VEHICLE Engine Oil Viscosity (SAE Grade) - 5.7L Engines The recommended engine oil viscosity for vehicles equipped with the 5.7L engine is SAE 5W-20. NOTE: Engine oils higher in viscosity may reduce fuel economy in vehicles equipped with 5.7L engines. Synthetic Engine Oils You may use synthetic engine oils provided that the recommended oil quality requirements are met and the recommended maintenance intervals for oil and filter changes are followed. Materials Added to Engine Oil The manufacture strongly recommends against the addition of any additives (other than leak detection dyes) to the engine oil. Engine oil is an engineered product and it's performance may be impaired by supplemental additives. Disposing of Used Engine Oil And Oil Filters 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 dealer, service station, or governmental agency for advice on how and where used oil and oil filters can be safely discarded in your area. Engine Oil Filter The engine oil filter should be replaced at every engine oil change. Engine Oil Filter Selection This manufacture's engines have a full-flow type oil filter. Use a filter of this type for replacement. The quality of replacement filters varies considerably. Only high quality filters should be used to assure most efficient service. Mopar Engine Oil Filters are a high quality oil filter and are recommended. Drive Belts - Check Condition and Tensioner Belt tension is controlled by means of an automatic tensioner. No belt tension adjustments are required. However, belt and belt tensioner condition should be inspected at the specified intervals, and replaced if required. See your authorized dealer for service. At the mileage indicated in the maintenance schedule, all belts and tensioner should be checked for condition. Improper belt tension can cause belt slippage and failure.