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Complete 7.3L Powerstroke Maintenance Schedule & Parts List

7.3L Powerstroke Maintenance Schedule (1994-2003 Ford Superduty Trucks)

1994.5-2003 Ford Superduty 7.3L Diesel Maintenance Guide

The 7.3L Powerstroke is well-known for being reliable and long-lasting. Even under abuse these trucks last a long time. That doesn’t mean that you should neglect yours though! Regular maintenance can go a long way in helping you extend your 7.3s useful life. It’ll keep your truck working like its supposed to and greatly reduce the amount of problems you encounter. Maintenance procedures and parts are slightly different depending on your specific model year 7.3L Powerstroke. Take a look at the different charts below and follow the one that applies to your specific model year. Make sure you follow our recommended 7.3L Powerstroke maintenance schedule exactly, as it’s based directly off of OEM advised maintenance schedules.

7.3L Powerstroke Service Schedule
7.3L OBS Powerstroke

7.3L Powerstroke Maintenance Schedule : Normal Operating Conditions

Maintenance/ServiceMilesKilometers
Change Oil5,000 miles8,000 km
Change Oil
Filter
5,000 miles8,000 km
Change Fuel
Filter
15,000 miles or when
filter restriction lamp
illuminated
25,000 km
Replace Air
Filter
30,000 miles or 30 months
(Or when restriction gauge
in red zone)
50,000 km
Flush Cooling
System
Replace at 50,000 miles, then
30,000 mile intervals
50,000 km
Replace Automatic
Transmission Fluid
30,000 miles50,000 km
Check & Lubricate
auto. trans shift
linkage
At 5,000 miles,
then at 10,000 mile intervals
16,000 km
Check & Lubricate
clutch release lever
At 5,000 miles then at 15,000
mile intervals
25,000 km
Replace Manual
transmission fluid
60,000 miles100,000 km
Change transmission filter30,000 miles50,000 km
Replace Transfer
Case Fluid
60,000 miles100,000 km
Replace Rear
Differential Fluid
99,000 miles; if submerged
in water replace immediately
160,000 km
Replace Front
Differential Fluid
99,000 miles; if submerged
in water replace immediately
160,000 km

7.3L Powerstroke Maintenance Schedule : Severe Operating Conditions

Maintenance/ServiceMilesKilometers
Change Oil3,000 miles5,000 km
Change Oil
Filter
3,000 miles5,000 km
Change Fuel
Filter
15,000 miles25,000 km
Replace Air
Filter
30,000 miles/36 months or
sooner. Ford: check
every 3,000
miles and identify
what intervals you
need to change your
air filter. Then stick
with it.
50,000 km
Flush Cooling
System
At 50,000 miles, followed
by 30,000 mile intervals
50,000 km
Replace Automatic
Transmission Fluid &
Filter
21,000 miles35,000 km
Check & Lubricate
auto. trans shift
linkage
6,000 miles10,000 km
Check & Lubricate
clutch release lever
At 3,000 miles, then every
15,000 miles
25,000 km
Change Manual
transmission Fluid
60,000 miles100,000 km
Replace Transfer
Case Fluid
60,000 miles100,000 km
Replace Rear
Differential Fluid
30,000 miles or immediately
if submerged in water
50,000 km
Replace Front
Differential Fluid
30,000 miles or immediately
if submerged in water
50,000 km

7.3L Powerstroke OEM Maintenance Parts, Filters, & Fluids

If you want to keep your 7.3L Powerstroke running well, you should use products that meet or exceed OEM standards. At Diesel Resource, we’re big believers in using OEM maintenance parts. Here’s a comprehensive chart of all the fluids, filters, and parts you will need to maintain your 7.3L Powerstroke.

Part TypePart # or YearAmazon Link
Engine OilXO-15W40-QSD
15W40
Motorcraft 15W40 (Recommended)
Shell Rotella T4 15W40
Shell Rotella T6 15W40
Lucas Oil 15W40
Engine Oil FilterFL-1995
F4TZ-6731-A
Motorcraft FL-1995
Ford F4TZ-6731-A
Fuel Filter1994.5-1997
1999-2003
Motorcraft FD4595
Motorcraft FD4596
Serpentine Belt1994.5-1997
1999-2003
Motorcraft JK81195
Motorcraft JK81227
Engine Air Filter1994-1997
1999-2001
2002-2003
Motorcraft FA1617
Motorcraft FA1680
Motorcraft FA1750
Coolant50/50 mixture
See Owner’s
Manual for
more details
Motorcraft VC 5
BatteryBXT65-850Motorcraft BXT65-850
Wiper BladesWW1800PC
WW1802PF
WW1800PC
WW1802PF
Automatic
Transmission
Fluid
Mercon V ATFMercon V ATF
Transmission
Filter
Motorcraft
FT114
Motorcraft FT114
Manual
Transmission
Fluid
Mercon V ATFMercon V ATF
Transfer Case
Fluid
Mercon V ATFMercon V ATF
Rear Differential
Fluid
Dana 80
Dana 135
75W90 Gear Oil
80W90 Gear Oil
Front
Differential
Fluid
Dana 50
Dana 60
80W90 Gear Oil
80W90 Gear Oil

Learn More about the 7.3L Powerstroke

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ABOUT Kamil

Founder of Diesel Resource and a complete diesel head. Has a little bit of problem buying too many trucks. Learn more about him by checking out his truck.