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Page 228 of 379

FORD F-650/750 2022  Owners Manual 3. Add engine oil that meets our
specifications.  See Capacities and
Specifications (page 286).
4. Reinstall the engine oil filler cap. Turn it clockwise until you feel a strong
resistance.
Note:  Do

Page 229 of 379

FORD F-650/750 2022  Owners Manual •
Sustained, high-speed driving at the
gross vehicle weight rating.
• Use of fuels with sulfur content other
than ultra-low sulfur diesel (ULSD).
• Use of high-sulfur diesel fuel.
Only use engin

Page 238 of 379

FORD F-650/750 2022  Owners Manual Dispose of used engine coolant in an
appropriate manner.  Follow your
community
’s regulations and standards
for recycling and disposing of automotive
fluids.
Severe Climates
If you drive in extreme

Page 239 of 379

FORD F-650/750 2022  Owners Manual •
Robinair® Coolant and Battery
Refractometer 75240 –
Recommended refractometer to test
coolant concentration. (Rotunda tool
part number: ROB75240).
• Rotunda 328-R071–ELC (Antifreeze
Coolant

Page 242 of 379

FORD F-650/750 2022  Owners Manual Do not use the following as a coolant
substitute:
•
Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Alcohol and other liquids can cause engine
damage fro

Page 243 of 379

FORD F-650/750 2022  Owners Manual change as you drive. This is to be expected
as being normal to the operation of your
vehicle. High levels of fan noise might also
be heard when your engine is first started,
and should normally decrea

Page 244 of 379

FORD F-650/750 2022  Owners Manual 4. Check the coolant level. If the coolant
level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehic

Page 249 of 379

FORD F-650/750 2022  Owners Manual 5. Turn the air conditioning (if equipped)
on and allow the engine to idle for at
least one minute.
6. Release the parking brake. With your foot on the brake pedal and with the
air conditioning on, pu