2026 RAM Heavy Duty Maintenance Schedule: What to Expect

Owning a 2026 RAM Heavy Duty, whether it’s the RAM 2500 or the RAM 3500, means driving a truck built for serious performance. But with great power comes the need for regular maintenance. Keeping up with your service schedule not only protects your investment but also ensures your truck keeps delivering the horsepower, towing capacity, and reliability it’s known for.

If you’re wondering, “How often should I service my RAM Heavy Duty?”—we’ve got you covered. Here’s a breakdown of the recommended maintenance schedule and why servicing at Monrovia Chrysler Dodge Jeep RAM is the smart choice.

RAM Heavy Duty Maintenance Schedule at a Glance

Oil Changes and Routine Checks

For most drivers, oil changes should be performed every 7,500 miles or once a year, whichever comes first. RAM recommends synthetic oil for optimal performance, especially if you’re towing or hauling regularly. At these intervals, technicians will also:

• Replace the oil filter
• Rotate the tires
• Inspect brakes and suspension
• Check fluid levels and battery health

30,000-Mile Service

At around 30,000 miles, it’s time for a deeper inspection. This service may include:

• Replacing the engine and cabin air filters
• Checking the transfer case and differential fluids (especially for 4×4 models)
• Inspecting the cooling system, suspension, and exhaust
• Brake inspection and potential pad replacement

60,000-Mile Service

By the time you hit 60,000 miles, your RAM Heavy Duty has done some serious work. At this milestone, service typically includes:

• Replace spark plugs (for gas engines)
• Inspect and possibly replace brake pads and rotors
• Check the transmission fluid and filter
• Check belts and hoses for wear

90,000-Mile Service

The 90,000-mile service is all about keeping your truck road-ready for the long haul. Key steps often include:

• Full cooling system flush
• Fuel system cleaning
• Replacing worn belts or hoses
• Comprehensive inspection of the drivetrain and suspension

Think of this as a “reset” to keep your RAM performing like new well past the 100,000-mile mark.

Gas vs Diesel: A Quick Note

Maintenance varies a bit by engine. Gas-powered RAM Heavy Duty trucks follow the mileage-based intervals above. Cummins turbo-diesel models use an oil life monitor and can often go longer between oil changes under highway driving, but they add a few diesel-specific items: fuel filter and water-separator service and periodic diesel exhaust fluid (DEF) top-offs. Always follow the in-dash oil life indicator and your owner’s manual, and our team can confirm the right plan for your engine.

Does RAM Cover Routine Maintenance?

With the purchase of a new 2026 RAM Heavy Duty, some service intervals may be covered under RAM Care, depending on your package. This program includes:

• Complimentary oil changes and tire rotations
• 24/7 roadside assistance
• Trip interruption protection

Ask our team at Monrovia CDJR if your truck qualifies.

Why Service at Monrovia CDJR?

Servicing at Monrovia CDJR means your RAM is in the hands of factory-trained technicians who know Heavy Duty trucks inside and out. We use Mopar® parts designed specifically for RAM models, and our online scheduling system makes it easy to plan maintenance around your busy life.

Frequently Asked Questions

How often should I change the oil in my RAM 2500 or 3500?

For gas-engine RAM Heavy Duty trucks, plan on an oil and filter change about every 7,500 miles or once a year. Cummins diesel models use an oil life monitor and can go longer between changes under highway use, so always follow the in-dash indicator and your owner’s manual.

What is included in the 30,000-mile RAM Heavy Duty service?

The 30,000-mile service typically includes new engine and cabin air filters, a check of the transfer case and differential fluids on 4×4 models, and inspection of the cooling system, suspension, exhaust, and brakes.

What is the difference between gas and diesel RAM Heavy Duty maintenance?

Diesel RAM Heavy Duty trucks add fuel filter and water-separator service and diesel exhaust fluid (DEF) top-offs, and they often follow longer oil intervals guided by the oil life monitor. Gas models follow more conventional mileage-based intervals.

Does RAM cover routine maintenance on a new Heavy Duty truck?

Depending on your package, some service may be covered under RamCare, which can include complimentary oil changes and tire rotations, 24/7 roadside assistance, and trip-interruption protection. Ask our team if your truck qualifies.

Where can I service my RAM Heavy Duty near Monrovia?

Sierra CDJR of Monrovia services the RAM 2500 and 3500 with factory-trained technicians and genuine Mopar parts. Schedule online or call 626-507-9500.