2007 Chrysler 300 Owner Manual - Page 338

338 MAINTAINING YOUR VEHICLE American Petroleum Institute (API) Engine Oil Identification Symbol This symbol means that the oil has been certified by the American Petroleum Institute (API). The manufacture only recommends API Certified engine oils. NOTE: Vehicles equipped with a 5.7L engine must use SAE 5W-20 oil. Failure to do so may result in improper operation of the Multiple Displacement System (MDS). Refer to "Multi Displacement System" under "Starting and Operating" for details. In areas where these grades are not generally available, higher SAE grades may be used. Lubricants that have both an SAE grade number and the API Certification Symbol or ACEA category shown on the container should be used. Lubricants that do not have both the engine oil certification mark and the correct SAE viscosity grade number should not be used. Engine Oil Viscosity (SAE Grade) - 2.7L and 5.7L Engines 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 engine. For information on engine oil filler cap location, refer to the "Engine Compartment" illustration in this section.