2019 FORD SUPER DUTY Owners Manual

Page 345 of 666

FORD SUPER DUTY 2019  Owners Manual Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that

Page 346 of 666

FORD SUPER DUTY 2019  Owners Manual ENGINE COOLANT CHECK -
6.7L DIESEL
WARNING: Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the c

Page 347 of 666

FORD SUPER DUTY 2019  Owners Manual It is very important to use prediluted
coolant approved to the correct
specification to avoid plugging the small
passageways in the engine cooling system.
See Capacities and Specifications
(page 431).

Page 348 of 666

FORD SUPER DUTY 2019  Owners Manual Alcohol and other liquids can cause engine
damage from overheating or freezing.
Do not add extra inhibitors or non-specified
additives to the coolant. These can be
harmful and compromise the corrosion

Page 349 of 666

FORD SUPER DUTY 2019  Owners Manual Severe Climates
If you drive in extremely cold climates:
•
It may be necessary to increase the
coolant concentration above 50%.
• A coolant concentration of 60%
provides improved freeze point
prot

Page 350 of 666

FORD SUPER DUTY 2019  Owners Manual Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes.  Your transmission
does not consume fluid.  However, if the
transmission slips, slowly shifts or i

Page 351 of 666

FORD SUPER DUTY 2019  Owners Manual Type B
For vehicles equipped with 5-speed
transmissions, check the fluid at the
normal operating temperature of 151°F
(66°C) to 170°F (77°C) on a level surface.
For vehicles equipped with 6-speed

Page 352 of 666

FORD SUPER DUTY 2019  Owners Manual •
the dipstick handle.
• See Capacities and Specifications
(page 419).
If necessary, add fluid in 
8 fl oz (250 ml)
increments through the filler tube until the
level is correct.
Type A Type B
If