Change your engine oil regularly with SAE 10W-30 or SAE 10W-40 viscosity API certified engine oil. If you expect to operate your vehicle in temperatures below 0 degrees Fahrenheit, you may wish to use SAE 5W-30 engine oil.
Use Mopar automatic transmission fluid in your power steering reservoir. Most generic power steering fluids are also acceptable. Choose DOT-3 brake fluid to keep your Voyager stopping on a dime. Avoid using non-recommended brake fluids in order to avoid damage to or failure of your brake systems.
Mix one part of your engine coolant with one part distilled water when filling your radiator or coolant overflow reservoir. A higher proportion of coolant–up to 70 percent–is acceptable when you expect to face extreme low temperatures, but running pure coolant without water in the mixture isn’t recommended.