2021 FORD F650/750 check engine

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Page 215 of 390

FORD F650/750 2021  Owners Manual GENERAL INFORMATION
WARNING: Making modifications
to various parts, components and
systems of the vehicle, such as brake and
steering systems, can adversely affect
the quality, reliability and operati

Page 218 of 390

FORD F650/750 2021  Owners Manual UNDER HOOD OVERVIEW - 6.7L DIESEL
Engine compartment fuse box.  See Fuses (page 193).
A
Windshield washer fluid reservoir.  See 
Washer Fluid Check (page 242).
B
Automatic transmission fluid dipstick.

Page 219 of 390

FORD F650/750 2021  Owners Manual UNDER HOOD OVERVIEW - 7.3L
Engine compartment fuse box.  See Fuses (page 193).
A
Windshield washer fluid reservoir.  See 
Washer Fluid Check (page 242).
B
Automatic transmission fluid dipstick.  See

Page 220 of 390

FORD F650/750 2021  Owners Manual ENGINE OIL DIPSTICK - 7.3L
Minimum.
A
Nominal.
B
Maximum.
C
ENGINE OIL DIPSTICK - 6.7L
DIESEL Minimum.
A
Maximum.
B
ENGINE OIL CHECK - 7.3L
To check the engine oil level consistently
and accurately, d

Page 221 of 390

FORD F650/750 2021  Owners Manual Only use oils certified for gasoline engines
by the American Petroleum Institute (API).
An oil with this trademark symbol
conforms to the current engine and
emission system protection standards and
fu

Page 222 of 390

FORD F650/750 2021  Owners Manual Adding Engine Oil
WARNING: Do not remove the filler
cap when the engine is running.
Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that may
n

Page 224 of 390

FORD F650/750 2021  Owners Manual From the main menu scroll to:
Action and Description
Message
Press the down arrow
button, then from this menu
scroll to the following
message.
Truck Info
Press the OK button.
Mainten-
ance
Monitor
Pre

Page 229 of 390

FORD F650/750 2021  Owners Manual 2. Locate the diesel fuel conditioner
module and place an appropriate
container under the drain port. 3.
Rotate the drain counterclockwise until
the O-ring is visible. Allow the diesel
fuel conditione