Ford F-650/750 (2018 year). Manual — part 83

Sustained High-speed Driving at Gross Vehicle Weight Rating (Maximum Loaded Weight

for Vehicle 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

Inspect the coolant concentration (freeze-point protec-
tion) and additive (corrosion inhibitor) strength. 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: 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 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.

Operating in Sustained Ambient Temperatures Below -9.4°F (-23°C) or Above 100.3°F

(38°C)

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

Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)

Rotate the tires

1

, inspect the tires for wear and measure

tread depth.

Every 7,500 mi (12,000 km)

Inspect the brake system pads and rotors.

Inspect the air filter restriction gauge. Replace the filter if
necessary.

Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)

Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.

Change the engine oil and filter.

2

Every 7,500 mi (12,000 km),
six months or 300 engine
hours

Inspect and lubricate the U-joints.

Replace the engine-mounted and frame-mounted fuel
filters.

Every 15,000 mi
(24,000 km), 6 months or
600 engine hours

Replace the air inlet foam filter.

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.

Off-road Operation

Inspect functional holes in each leg of the twin exhaust
tips and the holes under the shield just inboard of the right
rear tire to make sure they are clean and clear of debris or
foreign materials. Refer to the Vehicle Care chapter of your
owner’s manual for more information.

As required

Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.

Rotate the tires

1

, inspect the tires for wear and measure

tread depth.

Every 7,000 mi (12,000 km),
six months or 300 engine
hours

Inspect the brake system pads and rotors.

Inspect the air filter restriction gauge. Replace the filter if
necessary.

Change the engine oil and filter.

2

Every 7,000 mi (12,000 km)
or 300 engine hours

Off-road Operation

Replace the engine-mounted and frame-mounted fuel
filters.

Every 15,000 mi
(24,000 km), six months or
600 engine hours

Replace the air inlet foam filter.

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)

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
300 engine hours

Using Fuel Other Than Ultra-low Sulfur Diesel Fuel - Vehicles Operated Where Ultra-low

Sulfur Diesel Fuel is not Required or Available

Change engine oil and filter.

Every 2,500 mi (4,000 km)
or three months (if using
high sulfur fuel with more
than 500 ppm sulfur)

Change engine oil and filter.

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:

Rear Axle Maintenance

A rear axle fluid change or level check is
not required unless a leak is suspected or
the assembly has been submerged in
water. During long periods of trailer towing
with outside temperatures above 70°F
(21°C), and at wide-open throttle for long
periods above 45 mph (72 km/h), change
the rear axle fluid every 24,000 mi
(38,000 km) or three months, whichever
comes first.

California Fuel Filter Replacement

If you register your vehicle in California, the
California Air Resources Board has
determined that the failure to perform this
maintenance item does not nullify the
emission warranty or limit recall liability
before the completion of your vehicle's
useful life. Ford Motor Company, however,
urges you to have all recommended
maintenance services performed at the
specified intervals and to record all vehicle
service.

Hot Climate Oil Change Intervals

The normal oil change interval is 3,000 mi
(5,000 km) for gasoline vehicles operating
in the Middle East, North Africa,
Sub-Saharan Africa or locations with
similar climates using American Petroleum
Institute (API) oils Certified for Gasoline
Engines and displaying the API Certification
Mark. If API Certified Oils are not available,
then it is acceptable to use API SM or SN
oils. If API oils are not available, then the
oil change interval is 1,750 mi (3,000 km).

Engine Air Filter Replacement

The life of the engine air filter is dependent
on exposure to dusty and dirty conditions.
Vehicles operated in these conditions
require frequent inspection and
replacement of the engine air filter and
cabin air filter.

Diesel Particulate Filter

The filter may need to be removed for ash
cleaning at approximately 120,000 mi
(192,000 km) or greater (actual mileage
can vary greatly depending upon engine
and vehicle operating conditions) and
replaced with a new or re-manufactured
(ash cleaned) part. The filter may need to
be replaced at approximately 250,000 mi
(400,000 km) depending upon engine and
vehicle operating conditions. In both cases,
the engine control system sets a service
light (wrench icon) to inform you to bring
your vehicle to the dealer for service. If
there are any issues with the oxidation
catalyst or particulate filter system, a
service light (wrench or engine icon) sets
by the engine control system to inform you
to bring your vehicle into a dealer for
service.