For a 1997 Chrysler Cirrus, you should use a
50/50 mix of ethylene glycol-based antifreeze coolant and distilled water. Make sure the antifreeze is compatible with aluminum. Most modern antifreezes are, but it's always good to check the label. Avoid using anything labeled "universal" if it's not explicitly stated to be compatible with older vehicles.
Crucially: Check your owner's manual. It will specify the recommended type of coolant and the proper mixing ratio for your specific vehicle. Following the manufacturer's recommendations is always the best practice to ensure optimal engine performance and longevity.
