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The specified coolant capacity for the 2002 Ford F-150 5.4 Triton V8 is 5.4 gallons. It must consist of a 50/50 mixture of coolant and distilled water, requiring 2.7 gallons of each. It is crucial not to use pre-diluted coolant, as distilled water lacks minerals or metals that could lead to rust in the radiator or coolant system. It is recommended to flush the coolant system every 5 years or 100,000 miles. The truck requires an ethylene glycol-based coolant, typically orange or yellow, for anti-freeze, anti-corrosion purposes, and to maintain a contaminant-free coolant system.
The 2002 Ford F150 equipped with the 5.4-liter engine can hold up to 2.7 gallons of coolant.