Adding and replacing engine coolant-7.3L Power Stroke and
Cummins B engines
Refer to the Scheduled Maintenance Guide for service intervals of the
engine cooling system.
Use Ford Premium Engine Coolant E2FZ-19549–AA (in Canada,
Motorcraft CXC-8–B) or a premium engine coolant that meets Ford
specification ESE-M97B44–A. Do not use alcohol or methanol antifreeze.
The use of an improper coolant may cause cooling system and/or engine
damage and may void the warranty of your vehicle’s engine cooling
system.
A mixture of 50% engine coolant concentrate and 50% water (50/50
ratio) is recommended to maintain best overall cooling system
performance. A 60/40 antifreeze to water ratio is acceptable for
extremely cold climates, but the coolant and water mixture must be
returned to a 50/50 ratio at the end of the winter season. To avoid
damaging the cooling system and engine, the coolant and water mixture
should never exceed a 60/40 antifreeze to water ratio.
Operating the engine with insufficient coolant can cause severe
cooling system and engine damage.
When refilling the engine cooling system as part of regular maintenance
or due to service, adhere to the following instructions:
1. Drain and flush the cooling system to remove dirt deposits, oil and
rust particles. Always dispose of used automotive fluids following your
community’s standards.
2. Fill the coolant reservoir with the specified coolant and water mixture
until the level stabilizes within the cold fill range.
3. Reinstall the coolant reservoir cap.
4. Start and idle the engine until the upper radiator hose is warm
(approximately 10–15 minutes). If the hose does not get warm, repeat
this step at a higher engine speed.
5. Once the hose is warm, shut the engine off.
6. Cautiously remove the coolant reservoir cap as previously described,
and add the specified coolant and water mixture until the level stabilizes
within the cold fill range of the coolant reservoir.
7. Reinstall the engine coolant reservoir cap.
Maintenance and care
135
Maintenance Operation Frequency - Observation
Check the transmission and
engine mountings (*b)Hard shifting or excessive vibration
Check and adjust transmission
controls (*b)High effort to shift or noisy
transmission
Check fuel pump pressure Insufficient full-throttle power or
backfiring
Clean radiator cap seal. Clean
and inspect the cap surface on
the radiatorWhen the cap does not hold pressure
Check the battery terminals for
corrosionWhenever electrical power supply has
diminished
Tighten the wheel mounting
nuts to the specified torque.
Refer toServicing your
wheels and tiresRequired initially at 804 and 1 609 km
(500 and 1 000 miles). Perform again
at 804 and 1 609 km (500 and 1 000
mile) intervals after each tire
removal/replacement.
*a During maintenance and repair, protect the fuel tube and the hose
assemblies, the power steering lines, and the air brake lines from the
external heat, the acids and the abrasion that could damage the lines.
*b Check for (free) linkage action and ensure that (return) spring
force is adequate to maintain pedal free play.
*c Adjust, repair or replace as required with the same or equivalent
parts.
General maintenance information
189
