2020 FORD F450 SUPER DUTY Owners Manual

Page 361 of 633

FORD F450 SUPER DUTY 2020  Owners Manual ENGINE COOLANT CHECK -
6.2L
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 coolant

Page 362 of 633

FORD F450 SUPER DUTY 2020  Owners Manual To top up the coolant level do the
following:
1. Unscrew the cap slowly. Any pressure
escapes as you unscrew the cap.
2. Add prediluted coolant meeting the correct specification.  See Scheduled
Mainte

Page 363 of 633

FORD F450 SUPER DUTY 2020  Owners Manual If you drive in extremely hot climates:
•
It may be necessary to decrease the
coolant concentration to 40%.
• A coolant concentration of 40%
provides improved overheat
protection.  Coolant concent

Page 364 of 633

FORD F450 SUPER DUTY 2020  Owners Manual 2. If you are a member of a roadside
assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait a short period for the engine to cool

Page 365 of 633

FORD F450 SUPER DUTY 2020  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 366 of 633

FORD F450 SUPER DUTY 2020  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 450).

Page 367 of 633

FORD F450 SUPER DUTY 2020  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 368 of 633

FORD F450 SUPER DUTY 2020  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