2016 Peterbilt 579 Maintenance Schedule

Quick Reference Maintenance Schedule

Severe-Duty Schedule

For trucks operating under severe conditions—such as frequent towing, operation in dusty environments, extensive idling, or short trips in cold climates—a more aggressive maintenance schedule is recommended. Under these conditions, consider halving the standard interval for oil and filter changes. For instance, if the standard oil change interval is 30,000 miles, a severe-duty schedule would recommend a change every 15,000 miles. Similarly, air and fuel filters may require more frequent replacement to prevent premature wear and maintain optimal performance.

Known Issues by Mileage

60,000–90,000 Miles:

• EGR Valve and Cooler Problems: The Exhaust Gas Recirculation (EGR) system can be prone to clogging, leading to reduced engine performance and potential overheating. Regular inspection and cleaning are crucial to prevent costly repairs.
• Aftertreatment System Faults: The diesel particulate filter (DPF) and selective catalytic reduction (SCR) systems can experience issues, often indicated by dashboard warning lights. These systems are complex and typically require professional diagnosis and service.

100,000–150,000 Miles:

• Turbocharger Wear: The turbocharger is a critical component for engine power, and its bearings can wear over time. Listen for unusual noises and monitor for any loss of power, which could indicate a failing turbo.
• Suspension and Steering Components: Bushings, tie rods, and other steering and suspension parts can wear, leading to a less stable ride and improper tire wear. Regular inspections and alignments are key to catching these issues early.

Estimated Cost Per Service

• 15,000-Mile Service: $200–$400
• 30,000-Mile Service: $300–$600
• 60,000-Mile Service: $500–$900
• 120,000-Mile Service: $800–$1,500
• 150,000-Mile Service: $1,000–$2,000

What You Can DIY vs. Shop

DIY:

• Engine and Cabin Air Filter Replacement: These are typically accessible and can be replaced with basic tools.
• Fuel Filter Replacement: While a bit more involved than an air filter, changing the fuel filter is a manageable DIY task for most owners.
• Accessory Belt Inspection: A visual inspection of the accessory belts for cracks or wear is a simple yet important check.

Shop:

• Engine Oil and Filter Change: Due to the large volume of oil and the need for proper disposal, this is often best left to a professional shop.
• Transmission Fluid Service: This requires specialized equipment to ensure the correct fluid level and is best performed by a qualified technician.
• Coolant Flush and Differential Service: These services also require specific procedures and equipment to be done correctly and are recommended to be done by a shop.

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