What kind of engine oil to use in a dodge charger 2007 3.5 liter with 36000 miles?

The 2007 Dodge Charger 3.5L engine requires an oil that meets the specifications outlined in your owner's manual. However, a good starting point, assuming no unusual operating conditions (extreme heat, frequent towing, etc.), is 5W-20 conventional or synthetic blend motor oil.

Crucially, check your owner's manual. It will specify the exact oil viscosity (like 5W-20 or 5W-30) and API certification (like SN or SM) that Dodge recommends. Using the wrong viscosity can damage your engine. The manual will also detail the oil capacity for your vehicle.

Don't rely solely on online advice; your owner's manual is the definitive source for this information.