2004 Dodge Ram 3500 Pickup Owner's Manual - Page 264

264 STARTING AND OPERATING NOTE: When the ambient temperature is above 90°F, you may experience hard starting and rough idle following start up even if the above recommendations are followed. Selection Of Engine Oil For best performance and protection of your vehicle, use only crankcase engine oils that meet the following requirements: • Engine Oil Selection for Operating on E-85 If you operate the vehicle on E-85 fuel either full or part-time, use only Mopar Flexible Fuel 5W-30 engine oil (P/N 4318086) or an equivalent that meets DaimlerChrysler Standard MS-9214. Equivalent commercial Flexible Fuel engine oils may be labeled as Flexible Fuel (FFV) or Alternate Fuel (AFV). These engine oils may be satisfactory if they meet the DaimlerChrysler Standard. The 5W-30 engine oil installed at the factory meets the DaimlerChrysler requirements for Flexible Fuel engine oil. SAE 5W-30 engine oil is preferred for use in Flexible Fuel engines. CAUTION! If Flexible Fuel engine oil is not used when using E-85, engine wear may be increased significantly. This may void your warranty. • Engine Oil Selection for Operating on Gasoline If you operate the vehicle on regular unleaded gasoline ONLY, use Mopar oil or an equivalent that meets certified API (American Petroleum Institute) Quality.