Ram Chassis Cab Maintenance Schedule
Engine, Mileage and Time Requirements for Scheduled Service
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Ram Chassis Cab Scheduled Maintenance Overview
Plan your Ram Chassis Cab service around the engine, mileage, elapsed time and way you drive. The schedule below draws from the manufacturer-authored owner’s manual and keeps normal, severe-use and equipment-specific work identified. Gas and diesel maintenance use separate grids. The gas engine has an 8,000-mile oil maximum; the diesel has a 15,000-mile maximum, with annual and engine-hour limits as well. Diesel DEF checks, fuel filters, air-filter limits, CCV filtration, transmission fluid and power-steering service must not be replaced with the gas-engine schedule. Our service team in Brevard can review your records, identify the applicable engine and help plan the next visit before a warning or worn component becomes a larger problem. Choose a model year above for its exact maintenance schedule and source details.
Oil-service guidance: Gas: max 8,000 miles / 12 months / 350 hours; diesel: max 15,000 miles / 12 months / 500 hours. Follow an earlier oil-change message and use the mileage, time or engine-hour limit reached first. A maintenance-grid column is not permission to extend an oil change past its maximum. Tell your advisor about towing, short trips, dust, idling and temperature extremes. Rotate tires at the first sign of irregular wear, following the rotation pattern allowed by the installed tires and wheels. Choose a model year above for its exact maintenance schedule and source details.
Oil & Filter
Gas: max 8,000 miles / 12 months / 350 hours; diesel: max 15,000 miles / 12 months / 500 hours
Cabin Air Filter
Every 12,000 miles
Confirm replacement part by VIN
Spark Plugs
6.4L gas: 100,000 miles; diesel: not applicable
Service Timing
Use mileage and elapsed time
Match the engine and operating conditions
Complete Maintenance Schedule by Mileage
| Interval | Service | Applies To |
|---|---|---|
| Every 7,500 miles / 6 months | Check DEF tank and refill; rotate tires; lubricate front end; inspect CV/universal joints | 6.7L Cummins diesel |
| Every 8,000 miles (Oil Change Indicator; max 8,000 mi / 12 months / 350 engine hours) | Change engine oil and filter; inspect exhaust; rotate tires at first sign of irregular wear; inspect batteries; inspect CV/universal joints; inspect brakes and parking brake; inspect cooling system; lubricate front end; inspect engine air cleaner (dusty/off-road) | 6.4L gasoline V8 |
| Every displayed 10,000-mile step from 20,000 miles | Rotate tires; inspect CV/universal joints | 6.4L gasoline V8 |
| Every 12,000 miles | Replace cabin air filter | 6.4L gasoline V8 |
| Every 12,000 miles | Replace cabin air filter | 6.7L Cummins diesel |
| Every 15,000 miles (max 15,000 mi / 12 months / 500 engine hours) | Change engine oil and filter; inspect exhaust; rotate tires; inspect batteries; inspect CV/universal joints; inspect brakes; inspect cooling system; lubricate front end; inspect engine air cleaner | 6.7L Cummins diesel |
| Every 15,000 miles / 12 months | Replace engine-mounted fuel filter AND chassis-mounted fuel filter; inspect engine air cleaner (replace as needed; max 30,000 mi / 24 months); inspect front suspension, tie rod ends, boot seals | 6.7L Cummins diesel |
| Every 20,000 miles / 2 years | Inspect front suspension/tie rod ends; inspect front/rear axle surfaces (change axle fluid for police, taxi, fleet, off-road, frequent towing); inspect brake linings and parking brake function | 6.4L gasoline V8 |
| Every 22,500 miles / 18 months | Inspect brake linings; inspect/adjust parking brake; inspect drive belt; inspect front/rear axle surfaces (change axle fluid for severe use) | 6.7L Cummins diesel |
| Every 30,000 miles / 3 years | Replace engine air cleaner filter | 6.4L gasoline V8 |
| Every 30,000 miles / 24 months | Inspect wheel bearings; inspect transfer case fluid (4x4), change for police, taxi, fleet, frequent towing | 6.7L Cummins diesel |
| 60,000 and 120,000 miles | Change transmission fluid | 6.4L gasoline V8 |
| 60,000 and 120,000 miles | Change transmission fluid - TorqueFlite | 6.7L Cummins diesel |
| 60,000 and 120,000 miles | Change transfer case fluid (4x4) | 6.7L Cummins diesel |
| 67,500 and 150,000 miles | Replace crankcase ventilation (CCV) filter | 6.7L Cummins diesel |
| 97,500 miles / 78 months | Flush and replace power steering fluid | 6.7L Cummins diesel |
| 100,000 miles | Replace spark plugs (mileage based only); inspect and replace PCV valve if necessary | 6.4L gasoline V8 |
| 120,000 miles | Change transfer case fluid | 6.4L gasoline V8 |
| 10 years or 150,000 miles | Flush and replace engine coolant | 6.4L gasoline V8 |
| 150,000 miles / 120 months | Flush and replace engine coolant (dealer-recommended service) | 6.7L Cummins diesel |
| 60,000 and 120,000 miles (police, taxi, fleet, frequent trailer towing) | Inspect transfer case fluid; change for severe use | 6.4L gasoline V8 |
Time-Based and Engine-Specific Service
Use the time limit as well as the mileage shown in the applicable row. Spark-plug footnotes are mileage-based only. Coolant service uses the written ten-year/150,000-mile limit unless a separate engine row specifies otherwise.
- Brake-fluid timing must follow the plan and fluid specification for your vehicle
- Never extend oil service to the next air-filter or spark-plug milestone
- Inspections mean check condition and replace only where the plan requires or condition warrants
- Keep dated service records with the mileage and engine hours, where tracked
Engine-Specific Maintenance Details
Use the oil specification and fill that match the installed engine. The table covers 6.4L gasoline V8, 6.7L Cummins diesel. Quantities include the oil filter, and a final level check must follow the manual’s filling procedure. Do not use horsepower, trim name or a similar model as a substitute for identifying the engine. Replacement filters, spark plugs and other part numbers should be confirmed by VIN. Fluid requirements differ by transmission, axle and transfer-case application; confirm the correct specification before adding or replacing a fluid.
| Engine / Version | Required Engine Oil | Oil Fill With Filter |
|---|---|---|
| 6.4L gasoline V8 | SAE 0W-40 full synthetic, MS-A0921 | 7.0 qt |
| 6.7L Cummins diesel | SAE 10W-30 above 0 F; SAE 5W-40 synthetic below 0 F; MS-10902, API CK-4 | 12.0 qt |
Commercial Fleet, Upfit & Class 3-5 Maintenance
Gas and diesel maintenance use separate grids. The gas engine has an 8,000-mile oil maximum; the diesel has a 15,000-mile maximum, with annual and engine-hour limits as well. Diesel DEF checks, fuel filters, air-filter limits, CCV filtration, transmission fluid and power-steering service must not be replaced with the gas-engine schedule. Diesel fuel filters are every 15,000 miles/12 months; engine air filters must not exceed 30,000 miles/24 months. Diesel transmission and transfer-case fluid are listed at 60,000/120,000 miles; CCV filter marks are 67,500 and 150,000 miles. For B20-capable chassis cabs operated above 5% biodiesel, oil changes must not exceed 12,500 miles or 400 hours; the annual limit still applies. Keep the vehicle’s messages and condition checks in the service plan, even when a major mileage item is not yet due. If you notice a new leak, vibration, warning or braking change, arrange an inspection instead of waiting for the next scheduled visit.
- Identify the installed engine and drivetrain before selecting fluids.
- Ask for a condition check after off-road travel, water exposure or a suspected leak.
- Use the correct tire-rotation pattern for the installed wheel and tire sizes.
- Confirm replacement filters and spark-plug part numbers by VIN.
Severe & Special Operating Conditions
Diesel fuel filters are every 15,000 miles/12 months; engine air filters must not exceed 30,000 miles/24 months. Diesel transmission and transfer-case fluid are listed at 60,000/120,000 miles; CCV filter marks are 67,500 and 150,000 miles. For B20-capable chassis cabs operated above 5% biodiesel, oil changes must not exceed 12,500 miles or 400 hours; the annual limit still applies. More frequent attention can be needed in demanding conditions. A condition-based oil message and a specific severe-use fluid interval serve different purposes: follow each item that applies. Discuss the operating conditions below with your advisor; do not assume every shortened interval applies to every engine or drivetrain.
- Frequent towing or heavy loads
- Repeated short trips and extended idling
- Dust, gravel roads or off-road use
- Extreme heat or cold
- Commercial, police, taxi or fleet service where named in the plan
Service for Ram Chassis Cab Owners Across Western NC
Ram Chassis Cab owners around Brevard, Hendersonville, Asheville, Waynesville and Pisgah Forest drive on a mix of town streets, highways and mountain roads. Bring your mileage, service dates and any engine-hour information when booking. Tell the team about towing, payloads, idling, trail use or frequent short trips. Mahon CDJR can check which inspections and replacements are due, confirm parts for the installed engine and plan work around the way you use the vehicle.
Monthly & Semi-Annual Owner Checks
Between scheduled visits, follow the owner checks in your vehicle’s manual. Watch for changes in tire pressure and wear, warning messages, visible leaks, braking feel and unusual noises. Check accessible fluid reservoirs using the proper procedure and temperature conditions; do not open a hot cooling system. A warning, leak or suspected malfunction calls for attention before the next mileage milestone. The checks below are practical reminders to discuss with your service advisor.
- Check tire pressure and tread using your manual’s procedure.
- Check warning lights and exterior lights.
- Watch for leaks and changes in braking, steering or noise.
- Check accessible fluid reservoirs only as directed in the manual.
- Bring service dates, mileage and any engine-hour records to your visit.
Source: Choose a model year above for its exact owner’s manual and service plan. Requirements vary by engine, drivetrain and operating conditions. Confirm replacement parts by VIN and follow the vehicle’s messages. Contact Mahon CDJR at (828) 492-2121 for service guidance and pricing.
Schedule Your Ram Chassis Cab Maintenance at Mahon CDJR
Schedule your Ram Chassis Cab maintenance at Mahon CDJR in Brevard, NC. Our team can review the owner’s manual plan, check your records and confirm the correct parts and fluids for your vehicle. Bring any warning messages and describe how you use the vehicle so the visit includes the checks that apply. Book online or call (828) 492-2121.
Created November 3, 2026 by MM Dealer Advocates