2019 International MV Factory Maintenance Schedule

The 2019 International MV is a workhorse of the medium-duty commercial truck market. Typically equipped with the legendary Cummins B6.7 or L9 diesel engines and mated to an Allison automatic transmission, it is designed for heavy hauling, local delivery, and specialized vocational tasks. Keeping your MV on the road and out of the shop requires strict adherence to its factory maintenance schedule. Because these are commercial vehicles, intervals are often tracked by hours, mileage, or months—whichever comes first.

Below is the factory-spec maintenance schedule for the 2019 International MV Series, assuming normal highway or regional delivery use.

Quick reference

Note: The 2019 International MV is typically equipped with a Cummins diesel engine. Therefore, there are no spark plugs or timing belts (gear-driven timing) to service. Brake services depend on whether your MV has air brakes (most common) or hydraulic brakes.

Severe-duty schedule

Commercial trucks operate in fundamentally different environments. If your 2019 International MV is used in refuse collection, dump truck operations, heavy towing, continuous stop-and-go city delivery, dusty environments, or prolonged idling, it falls under the severe-duty category.

• Engine Oil & Filter: Cut the interval to 7,500 miles or 250 hours. Prolonged idling creates excess soot, which contaminates the oil much faster than highway driving.
• Fuel Filters: Replace every 10,000 miles. Poor fuel quality or excessive idle time degrades fuel filters rapidly.
• Transmission Service: For PTO-equipped vehicles or severe hauling, drop Allison transmission fluid and filter intervals to 50,000 or 75,000 miles.
• Air Filters: In dusty environments (like construction sites), engine air filters may need replacing every 15,000 miles. Rely on the restriction gauge rather than mileage.
• Chassis Greasing: Should be done every 2,500 to 5,000 miles. Stop-and-go and heavy loads beat up kingpins and U-joints.

Known issues by mileage

The 2019 MV Series is highly reliable mechanically, but complex modern diesel emissions systems require close attention.

• 30,000 - 60,000 Miles: DEF System Sensors & Injectors. The Diesel Exhaust Fluid (DEF) system can develop crystallization if the truck is idled too much or run on short trips. You may see warning lights for NOx sensors or DEF dosing valves.
• 80,000 - 120,000 Miles: VGT Turbo Actuator. The Cummins Variable Geometry Turbocharger (VGT) actuator can stick due to soot accumulation. Regular highway runs at load help burn off this soot.
• 100,000+ Miles: DPF Ash Loading. If the truck undergoes frequent active regenerations, the DPF will eventually fill with unburnable ash. A professional DPF bake and clean is mandatory around this mileage.
• 150,000+ Miles: Electrical & Cab Gremlins. Inspect cab mounts and the battery box area. Wiring harness rub-throughs on the frame rails can cause intermittent electrical faults in the lighting or ABS systems.

Estimated cost per service

Medium-duty truck maintenance is significantly more expensive than passenger vehicles due to fluid capacities and heavy-duty parts.

• Chassis Lube & Inspection: $50 - $100
• Oil, Lube, and Filter (PM Service): $250 - $400 (The Cummins L9 takes around 7-8 gallons of oil).
• Fuel Filters (Primary and Secondary): $150 - $250
• Air Brake Dryer Cartridge: $100 - $150
• DPF Cleaning / Baking: $400 - $700
• Allison Transmission Service (TranSynd Fluid): $350 - $600
• Differential/Axle Service: $150 - $300 per axle.

What you can DIY vs shop

What you can DIY: If you have a fleet yard or a large garage, basic Preventative Maintenance (PM) is completely manageable. Draining the air tanks daily, greasing the chassis, changing the engine oil, swapping fuel filters, and replacing the cabin and engine air filters can easily be done in-house. Swapping the air dryer cartridge is also a straightforward procedure for anyone familiar with air brake systems.

What you should leave to the shop: Anything involving the emissions system (DPF, DEF, SCR) should be handled by a professional shop with medium-duty diagnostic software (like Cummins INSITE or Navistar ServiceMaxx). DPF cleaning requires a specialized kiln. Furthermore, Allison transmission diagnostics, deep electrical harness repairs, and major air brake system overhauls (like replacing a compressor or complex valve blocks) are best left to ASE-certified heavy truck technicians to ensure DOT compliance and safety.

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