How much coolant do you use in a 1987 ford f-150 with a fuel Ijected 302?

A 1987 Ford F-150 with a fuel-injected 302 engine typically requires about 16 quarts (or approximately 4 gallons) of coolant when both the engine and the radiator are completely drained and refilled. It's important to use a 50/50 mix of coolant and water for optimal performance and protection against corrosion. Always check the owner's manual for specific recommendations and guidelines.