What kind of gas does a 1987 Chrysler fifth avenue take?

A 1987 Chrysler Fifth Avenue used leaded regular gasoline. However, it's crucial to understand that using leaded gas today is extremely difficult to find and environmentally damaging. Modern engines are not designed for leaded gasoline and it will cause significant damage.

While the car was designed for leaded fuel, it's strongly recommended to use unleaded regular gasoline and possibly add a fuel additive designed for older vehicles to mitigate potential issues from the use of unleaded fuel in a car intended for leaded. Consult a mechanic specializing in classic cars for the best advice on fuel and engine maintenance for a vehicle of this age.