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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 15000 miles (24000
km), six months, 600 engine
hours
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. Add coolant additive if
necessary.
Every 30000 miles (48000
km) or 1200 engine hours
Flush and refill the coolant. Do not add coolant additive.Every 60000 miles (96000
km) or 2400 engine hours
Note: When adding coolant additive, do not exceed the specified maximum of 48 fluid
ounces (1.4 liters) for the engine and 16 fluid ounces (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 60000 miles (96000 kilometers) or 2400
engine hours, flush and fill every 45000 miles (72000 kilometers) or 1800 engine hours
thereafter.
579
Super Duty (TFE) Canada/United States of America, enUSA, First Printing
Scheduled Maintenance
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