6.4L Power Stroke Service Information

6.4L Power Stroke Maintenance Schedule, Service Part Numbers, Fluid Specs

"Severe" duty conditions include any or any combination of the following:

• Excessive idling
• Frequent short trips in which the engine is shut-down before reaching full operating temperature
• Driving on dusty roads
• Driving off-road or in conditions that require 4 wheel drive
• Frequent towing or hauling (with the exception of very light loads)

As a general rule of thumb, always abide by the "Severe Duty" service schedule if your vehicle is used in any strenuous activity, i.e. is subjected to more rigorous conditions than normal, unladen driving.

6.4L Power Stroke Maintenance Schedule

Service Procedure

Recommended Service Interval(s)

Replace engine oil & oil filter

10,000 miles/6 months under normal operating conditions
5,000 miles/6 months under severe duty conditions

Replace fuel filter

20,000 miles/24 months
10,000 miles/400 hours

Replace engine air filter

Monitor air filter minder (mounted to air filter housing), replace as necessary

Flush engine cooling system

100,000 miles/6 years initial service
Subsequent service at 50,000 mile/3 year intervals (Motorcraft Gold engine coolant)

Replace automatic transmission fluid & filter

30,000 miles

Replace manual transmission fluid

100,000 miles

Replace transfer case fluid

150,000 miles under normal operating conditions
60,000 miles under severe duty conditions

Replace front differential fluid (4x4)

150,000 miles under normal operating conditions
50,000 miles under severe duty conditions

Replace rear differential fluid

150,000 miles under normal operating conditions (50,000 miles for F-450, F-550)
50,000 miles under severe duty conditions

6.4L Power Stroke Service Part Numbers

Engine air filter

Motorcraft FA-1886 (Ford 8C3Z-9N622-A)

Engine oil filter

Motorcraft FL-2016 (Ford 3C3Z-6731-AA)

Oil filter housing cap/lid

Motorcraft EC-781 (Ford 3C3Z-6766-CA)

Engine oil fill cap

Motorcraft EC-743 (Ford F3AZ-6766-B)

Oil pan drain plug

Ford 8C3Z-6730-A

Fuel filter set

Motorcraft FD-4617 (includes engine & chassis filters, o-rings)

Serpentine belt

Motorcraft JK8872E (Ford AC3Z-8620-B, single alternator)

Glow plug

Motorcraft ZD-15 (Ford 8C3Z12A342A)

Thermostat

Motorcraft RT-1212 (Ford 8C3Z-8575-D)

Thermostat housing gasket

Motorcraft RG-626 (Ford 8C3Z-8255-A)

Water pump

Motorcraft PW-482 (Ford 8C3Z-8501-B)

Radiator overflow/degas cap

Ford 9C3Z-8101-B

Camshaft position sensor (CPS)

Ford 8C3Z-12K073-A

Crankshaft position sensor (CKP)

Ford 3C3Z-6C315-AA

Exhaust backpressure sensor (EBP)

Motorcraft DPFE-7 (Ford 7E7Z-9J460-AA, sensor only)
Motorcraft DPFE-8 (Ford 8C3Z-9J460-A, sensor w/ tube)

Automatic transmission filter
(TorqShift 5R110W, 5 spd)

Primary filter

Motorcraft FT-180 (Ford 8C3Z-7A098-D)
(internal transmission filter)

Auxiliary filter

Motorcraft FT-145 (Ford 3C3Z-7B155-BA)
(external, frame mounted filter)

6.4L Power Stroke Oil/Fluid Specs & Capacities

Oil & Fluid Specs

Engine oil

15W-40

Acceptable viscosity in ambient temps > 10° F
Preferred viscosity in ambient temps > 30° F

10W-30

Acceptable viscosity in ambient temps -10 to 90° F
Preferred viscosity in ambient temps -10 to 30° F

5W-30

Acceptable viscosity in ambient temps < 30° F

0W-30

Acceptable viscosity in ambient temps < 0° F

Automatic transmission fluid

Motorcraft MERCON SP ATF

Manual transmission fluid

Motorcraft MERCON V full synthetic ATF

Transfer case fluid

Motorcraft XL-12 transfer case fluid

Front differential fluid

SAE 80W-90 gear oil, SAE 90W hypoid gear oil (variable specification)

Rear differential fluid [1]

Sterling 10.50"

SAE 75W-140 full synthetic gear oil

Dana 80

SAE 75W-90 full synthetic gear oil

Dana S135

SAE 80W-90 gear oil

Dana S110/S130

SAE 75W-140 full synthetic gear oil

Oil & Fluid Capacities

Fluid capacities are nominal - always fill to proper level on dipstick or to fill plug level as applicable

Engine oil capacity

15 quarts w/ filter

Engine Cooling system capacity

30.6 quarts, 7.7 gallons, 29.0 liters

Automatic transmission fluid capacity

17.5 quarts, 16.6 liters

Manual transmission fluid capacity

5.8 quarts, 11.6 pints, 5.5 liters

Transfer case fluid capacity

2.0 quarts, 4.0 pints, 1.9 liters

Front differential oil capacity[2]

2.9 quarts, 5.8 pints, 2.7 liters

Rear differential fluid capacity[2]

Sterling 10.50"

3.5 quarts, 6.9 pints, 3.3 liters

Dana 80

4.25 quarts, 8.5 pints, 4.0 liters

Dana S110/S130

7 quarts, 14.0 pints, 6.6 liters

[1] Limited slip differentials may require a supplemental friction modifier - use Motorcraft XL-3.
[2] Nominal differential oil capacity. Always fill axle to fill plug level and do not rely on the oil capacity as the actual refill capacity. Use provided figures as a reference to obtain the necessary fluid quantity only.