2020 RAM 3500 Maintenance
Manufacturer-Recommended Service Schedule
The manufacturer-recommended maintenance schedule for the 2020 RAM 3500 is shown above. Keeping up with these service intervals prevents premature wear, maintains fuel economy, and protects your powertrain warranty.
The most critical intervals are engine oil changes (typically every 5,000–10,000 miles for full synthetic), tire rotation (every 5,000–7,500 miles), and brake fluid (every 2–3 years). Always verify intervals against your owner's manual — the schedule varies by driving conditions.
| Service Item | Interval | Notes |
|---|---|---|
| Engine Oil & Filter | 8,000 mi / 12 mo | 5W-20 (6.4L HEMI gas) or 15W-40 (6.7L Cummins diesel), 12 qt (Cummins) |
| Tire Rotation | 8,000 mi / 6 mo | Rotate every oil change |
| Cabin Air Filter | 20,000 mi / 24 mo | Replace more often in dusty conditions |
| Engine Air Filter | 30,000 mi / 36 mo | Inspect every 15,000 mi |
| Brake Fluid | 40,000 mi / 36 mo | DOT 4; heavy-duty brakes |
| Transmission Fluid | 60,000 miles | AISIN 6-speed (diesel) or ZF 8-speed (gas); use manufacturer-approved fluid |
| Transfer Case Fluid | 60,000 miles | 4WD models; Mopar transfer case fluid |
| Coolant | 100,000 miles | Mopar OAT coolant; then every 50,000 mi |
| Spark Plugs | 30,000 miles | Gas engine only; HEMI uses copper core plugs at 30,000 mi |
| Serpentine Belt | 100,000 miles | Inspect at 60,000 mi |
| Battery | 60 months | Dual battery on diesel; check annually |
Key Fluid & Maintenance Specs
Motor Oil
0W-40 Full Synthetic — 7 qt
Lug Nut Torque
130 ft-lbs
Brake Fluid
DOT 3
Coolant
Mopar OAT (Purple/Violet)
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