S13 Recommended Service Intervals
Review recommended service intervals for the S13 engine, Dual Stage Aftertreatment System, and T14 automated transmission. Intervals vary based on fuel economy, application, mileage, hours, and operating time.
S13 Engine Service Intervals
Engine oil, oil filter, fuel filter, valve lash, coolant, and inspection intervals vary based on the truck’s average fuel economy.
| Service Action | <5.5 MPG | 5.5–7.5 MPG | ≥7.5 MPG |
|---|---|---|---|
| Replace Engine Oil and Oil Filter (ODI) |
40,000 miles 500 hours 6 months |
65,000 miles | 75,000 miles |
| Replace Fuel Filter (on engine) | 40,000 miles | 65,000 miles | 75,000 miles |
| Valve Lash Adjustment | Every 4th ODI | ||
| Check Coolant Freeze Point | At every oil change | ||
| Add Extended Life Coolant Extender | 600,000 miles with coolant testing | ||
| Replace Coolant | 1,200,000 miles | ||
| Inspect Belts, Air Intake Piping, and Clamps | At every oil change | ||
Oil and Oil Filter Information
- Factory fill: International FE Oil 5W-30 FA-4.
- Oil specification shown: INTL5W30FA4D, 55-gallon drum.
- The oil filter uses a cartridge-style design.
- The filter is located on the driver’s side, closest to the front of the engine.
- The engine uses a single oil-filter location.
- The filter cap includes an oil-can logo.
- The S13 engine is CK4 compatible for top-off and ODI.
- Oil capacity: 47.5 quarts.
Fuel Filter Information
- The fuel filter is cartridge style and located on the driver’s side of the engine.
- The fuel-filter module is positioned rearward of the oil-filter module.
- The fuel filter includes orientation tabs, while the filter module includes grooves for proper installation.
- The engine uses a single fuel-filter location.
Dual Stage Aftertreatment Service Intervals
The Diesel Particulate Filter and DEF filter have separate replacement intervals based on average fuel economy.
| Service Action | ≤5.8 MPG | 5.9–8.1 MPG | ≥8.2 MPG |
|---|---|---|---|
| Replace Diesel Particulate Filter (DPF) | 450,000 miles | 470,000–645,000 miles | 650,000 miles |
| Service Action | ≤5.5 MPG | 5.6–8.9 MPG | ≥9.0 MPG |
|---|---|---|---|
| Replace DEF Filter | 175,000 miles | 235,000 miles | 285,000 miles |
DPF and SCR1 Service Information
- The DPF is not cleanable and must be replaced.
- The DPF gasket and wire mesh are one-time-use components.
- The DPF replacement kit includes the wire mesh, DPF gasket, and DPF cover gasket.
- SCR1 is replaceable.
- Once removed, SCR1 cannot be reinstalled because of the welded wire mesh.
- A special tool is required to remove SCR1. Improper removal can damage the silencer casing.
T14 Automated Service Intervals
T14 transmission-fluid intervals vary by application and average fuel economy. Axle lubrication and filter intervals depend on whether the vehicle operates on highway or off highway.
| Service Action | Application | ≤5.5 MPG | 5.5–7.5 MPG | ≥7.5 MPG |
|---|---|---|---|---|
| Transmission Fluid Change (T14)* | Long Haul | 240,000 miles | 520,000 miles | 600,000 miles |
| Short Haul | 200,000 miles | 325,000 miles | 450,000 miles | |
| Severe Duty | 160,000 miles | 260,000 miles | 300,000 miles | |
| Replace Axle Lubrication and Filter |
500,000 miles for on-highway applications 250,000 miles for off-highway applications |
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*Transmission fluid must be changed every five years if the listed mileage interval is not reached.
Transmission Fluid
- 75W-80 oil.
- Specific fluid listed for the T14: SH550063250KK, 5-gallon pail.
- Using the incorrect fluid can cause damage.
Fluid Capacity and Filter Interval
- T14 without PTO: 21.3 pints.
- T14 with single or dual PTO: 24.1 pints.
- Transmission-filter interval: five years or every transmission fluid change.
- Wire-mesh cartridge filter.
Have Questions About Your S13 Service Schedule?
Contact one of our service departments to discuss your truck’s application, duty cycle, mileage, and recommended maintenance schedule.
