2010 Jeep Commander Owner's Manual - Page 365

MAINTAINING YOUR VEHICLE 365 Engine Oil Viscosity SAE 5W-20 engine oil is recommended for all operating temperatures. This engine oil improves low temperature starting and vehicle fuel economy. The engine oil filler cap also shows the recommended engine oil viscosity for your vehicle. For information on Materials Added to Engine Oils engine oil filler cap location, refer to "Engine Compart- The manufacturer strongly recommends against the addition of any additives (other than leak detection dyes) to ment" in this section. the engine oil. Engine oil is an engineered product and its NOTE: Vehicles equipped with a 5.7L engine must use performance may be impaired by supplemental SAE 5W-20 oil. Failure to do so may result in improper additives. operation of the Multiple Displacement System (MDS). Refer to "Multi-Displacement System" in Section 5 for Disposing of Used Engine Oil and Oil Filters Care should be taken in disposing of used engine oil and more details. oil filters from your vehicle. Used oil and oil filters, Lubricants, which do not have both the engine oil certiindiscriminately discarded, can present a problem to the fication mark and the correct SAE viscosity grade number, should not be used. Synthetic Engine Oils You may use synthetic engine oils if the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed. 7