On a Peterbilt 579 the PM-A is the short, frequent safety visit and the PM-B is the longer intermediate service that includes it. This page sets the two side by side with item lists, baseline intervals, labor hours and the PACCAR MX-13 intervals that decide when the oil and filters are actually due. Schedule a call to set up your 579 PM schedule.
PETERBILT 579 · PM-A AND PM-B · MX-13 FLEETS
Two Visits, One Rhythm: How a 579 Alternates Short and Long Services
What each service covers, how long it takes, and how to stop paying for oil changes the engine does not need yet.
579 SERVICE BASELINE
PM-A12,500 mi
PM-B25,000 mi
PM-C50,000 mi
Fleet-software baseline for PACCAR trucks.
PM-A vs PM-B on a Peterbilt 579
The A service checks safety and fluids, and the B service adds filters and measured wear checks
A fleet-software guide lists Peterbilt and Kenworth baselines of 12,500 miles for PM-A, 25,000 for PM-B and 50,000 for PM-C. The item lists below follow that guide's tier structure. The labor hours are generic tier estimates from two fleet guides and are not Peterbilt-specific, so time your own shop before you plan around them.
PM-ABasic safety service
12,500miles, baseline
1 to 2labor hours, generic
Engine oil and filter (if due by profile)
Brake inspection
Tire pressure and tread
Lights and safety equipment
Fluid top-offs
DEF level
Leak check
Chassis lubrication
VS
PM-BIntermediate service, includes every PM-A item
25,000miles, baseline
2 to 3labor hours total, generic
Fuel filter replacement
Belt and hose inspection
Driveline and U-joint check
Slip yoke check
Steering inspection
Expanded brake service
Battery and charging test
Aftertreatment fault check
Baseline, not mandate. No PACCAR document was found that sets PM-A and PM-B at these mileages. Confirm against your owner's manual and the build sheet.
The Service Rhythm Across 100,000 Miles
A, B, A, then a C at 50,000 miles, and the pattern repeats
If each tier includes the one below it, the baseline produces the sequence below. This is arithmetic from the baseline intervals, not a published PACCAR schedule, and each oil change and filter service still follows the MX-13 duty profile on the next section.
Want the A, B, A, C rhythm on every 579 automatically? Schedule a call and we will set it up.
One template per tier, triggered by miles or engine hours.
When the Oil and Filters Are Actually Due on an MX-13
Idle share and severity move the oil interval from 25,000 to 75,000 miles
The MX-13 oil interval is set by duty profile, not by the PM tier. Two vendor guides agree on oil: up to 75,000 miles for linehaul with under 20 percent idle, 50,000 miles with more idle, and 25,000 to 30,000 for severe or vocational work. One guide adds a cap of 1,200 engine hours on oil, and says the 75,000-mile interval needs idle under 20 percent, fuel economy above 6.0 mpg and CK-4 oil.
MX-13 ENGINE OIL AND FILTER INTERVAL BY DUTY PROFILE, MILES. TWO VENDOR GUIDES
Severe or vocational
25,000 - 30,000 mi
The guides disagree on some filter figures, so use the shorter value until your manual confirms
| Item | Linehaul, under 20% idle | Linehaul, over 20% idle | Severe or vocational |
|---|
| Engine oil and filter | 75,000 mi | 50,000 mi | 25,000 - 30,000 mi |
| Fuel filter | 50,000 - 75,000 mi | 40,000 - 50,000 mi | 25,000 - 30,000 mi |
| Coolant filter | 300,000 mi | 300,000 mi | 150,000 - 300,000 mi |
| DEF filter | 200,000 - 300,000 mi | 150,000 - 300,000 mi | 100,000 - 300,000 mi |
| DPF cleaning | 200,000 - 300,000 mi | 150,000 - 300,000 mi | 125,000 - 150,000 mi |
Engine-hour and hour caps differ. One guide caps oil at 2,250 hours for low-idle linehaul and the other at 1,200 hours. Neither names the PACCAR document it came from, so check the manual for your engine's hour limit.
How to Lower Service Cost Across a 579 Fleet
Match intervals to each truck's real duty, and keep every service on record
Running a 25,000-mile oil change on a truck that qualifies for 50,000 or more costs oil, filters and bay time for no gain. Running 75,000 on a truck that idles heavily risks engine wear. The fix is to classify each truck by its idle share and fuel economy.
Where fleets overspend
Oil changes on a fixed short interval for every truck
Full B service when only A is due
Separate shop visits for tasks that could be combined
Repeat visits for missed filters or fluids
Where fleets take risk
Long oil intervals on idle-heavy trucks
Non-genuine fuel filters
Extending intervals past PACCAR guidance
Missing service records for warranty
One vendor guide says non-genuine fuel filters are the most common MX-13 warranty claim and that extending intervals past PACCAR's guidance can void warranty claims. That is a single vendor's statement, so confirm your own warranty terms.
Cab air filter
On the 579 it sits behind the driver-side dash panel and is checked annually, according to one guide.
Aero panels
The same guide recommends a quarterly check of the aero panels.
Cut 579 Service Costs Without Missing a PM: Schedule PM-A and PM-B by Miles, Hours or Duty Profile in FleetRabbit
FleetRabbit lets you build PM-A and PM-B templates, assign them to each Peterbilt 579 and trigger them by miles, engine hours or date. Reminders go out before a service is due, and every completed service stays on the truck's record.
PM-A and PM-B templates
Miles, hours or date triggers
Reminders before due
Service record per truck
Frequently Asked Questions
Quick answers on Peterbilt 579 PM-A and PM-B
What is the difference between PM-A and PM-B?
PM-A is the basic safety and fluids service. PM-B includes every PM-A item and adds the fuel filter, belts and hoses, driveline, steering and expanded brake checks.
How often is PM-A on a 579?
A fleet-software guide lists 12,500 miles for Peterbilt and Kenworth, with PM-B at 25,000 and PM-C at 50,000. Confirm against your manual.
How long does each service take?
Generic estimates are 1 to 2 hours for A and 2 to 3 hours total for B. They are not Peterbilt-specific.
How often does an MX-13 need oil?
Up to 75,000 miles for low-idle linehaul, 50,000 with more idle and 25,000 to 30,000 for severe duty, according to two vendor guides.
Does every PM-A include an oil change?
Not necessarily. The oil interval follows the duty profile, so on a long-interval truck the oil falls on a later visit.
Will longer intervals void my warranty?
One vendor guide says extending intervals past PACCAR guidance can void warranty claims. Check your own terms.
What does FleetRabbit cost?
FleetRabbit is free for up to three vehicles and $5 per vehicle per month after that.
Track 3 vehicles free.
Put Every Peterbilt 579 on the Right Service Rhythm
Alternate the short and long services, tie oil and filters to each truck's duty profile and keep a record that shows every service was done on time.
Free tier for up to 3 vehicles · No credit card required · Service record stored per unit
October 12, 2026
By Sam Parker
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