The recommended oil viscosity for a Chrysler 300C depends on the
year and engine of the vehicle. There's no single answer. You
must consult your owner's manual. The manual will specify the recommended viscosity (e.g., 5W-20, 5W-30, 10W-30) based on the operating temperature in your region.
Using the wrong viscosity can damage your engine. Always check your owner's manual for the correct information.
