Ford F-650 2018 Owner's Manual page 341

Every 15,000 mi
(24,000 km), six months or
600 engine hours
Every 30,000 mi
(48,000 km)
1
Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted.
2
Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.
Using Biodiesel, up to and Including 20% Biodiesel (B20)
As required
Every 15,000 mi
(24,000 km), six months or
300 engine hours
Using Fuel Other Than Ultra-low Sulfur Diesel Fuel - Vehicles Operated Where Ultra-low
Every 2,500 mi (4,000 km)
or three months (if using
high sulfur fuel with more
than 500 ppm sulfur)
Every 5,000 mi (8,000 km)
or six months (if using high
sulfur fuel with fewer than
500 ppm sulfur)
Exceptions
There are several exceptions to the Normal
Schedule:
F650750 (TBC) , enUSA, Edition date: 201708, First Printing
Scheduled Maintenance
Off-road Operation
Replace the engine-mounted and frame-mounted fuel
filters.
Replace the air inlet foam filter.
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
Replace the engine-mounted and frame-mounted fuel
filters.
Sulfur Diesel Fuel is not Required or Available
Change engine oil and filter.
Change engine oil and filter.
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