2019 FORD F-450 User Manual

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Towing a Trailer or Using a Car-top Carrier

Inspect the engine and secondary cooling system coolant

concentration (freeze-point protection) and additive

(corrosion inhibitor) strength. If your vehicle has orange-

colored coolant, add coolant additive if necessary.

Every 30,000 mi

(48,000 km) or 1200 engine

hours

Flush and refill the coolant. Do not add coolant additive.Every 60,000 mi

(96,000 km) or 2400

engine hours

Note: If your vehicle has orange-colored coolant and you add coolant additive, do not

exceed the specified maximum of 50 fl oz (1.4 L) for the engine and 20 fl oz (473 ml) for

the secondary cooling system. Operating the engine with excessive coolant additive may

cause overheating which could lead to severe, permanent engine damage.

Note: After the initial coolant flush and fill at 60,000 mi (96,000 km) or 2400 engine

hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter.

Frequent or Extended Idling (Over 10 Minutes Per Hour of Normal Driving) or Frequent

Low-speed Operation if your Vehicle is Used for Stationary Operation

Change the engine oil and filter as indicated by the

information display, and perform the services listed in the

scheduled maintenance chart.

As required

Replace the engine-mounted and frame-mounted fuel

filters.

Every 15,000 mi

(24,000 km), six months or

600 engine hours