2025 Ram 3500 Oil Capacity & Filter

The 2025 Ram 3500 requires 7.0 quarts of 0W-40 oil for the 6.4L HEMI V8 engine and 12.0 quarts of 5W-40 or 10W-30 for the 6.7L Cummins Turbo Diesel engine.

Quick Answer

6.4L HEMI V8

• Oil Capacity: 7.0 qts / 6.6L
• Recommended Oil Weight: 0W-40
• Oil Specification: API SP / FCA MS-A0921
• Oil Filter (OEM): Mopar 68191349AC
• Oil Filter (Aftermarket): Fram PH10060, WIX 57060, Mobil 1 M1-113A

6.7L Cummins Turbo Diesel

• Oil Capacity: 12.0 qts / 11.4L (with filter)
• Recommended Oil Weight: 5W-40 or 10W-30 (see note below)
• Oil Specification: API CK-4 / CES 20086
• Oil Filter (OEM): Mopar 68542843AA
• Oil Filter (Aftermarket): Fram PH11867, WIX 57620XE, Mobil 1 M1-601A

Note: 5W-40 is preferred for most operating conditions. 10W-30 is suitable for year-round use where temperatures are consistently above 0°F (-18°C). Always consult your owner's manual for the final word on the correct fluid for your specific vehicle and operating conditions.

Capacity by Engine Option

Oil Change Interval

The Ram 3500 is equipped with an oil change indicator system that will alert you when service is due. However, the maximum recommended oil change interval varies by engine and usage.

• Normal Duty: For the 6.4L HEMI, change the oil every 10,000 miles or 12 months. For the 6.7L Cummins, the interval is up to 15,000 miles or 6 months. Normal duty assumes typical daily driving without frequent towing, heavy loads, or excessive idling.

• Severe Duty: If you frequently tow heavy loads, operate in dusty conditions, idle for long periods, or drive in extreme hot or cold temperatures, follow the severe duty schedule. This is typically every 4,000 miles for the 6.4L HEMI. For the 6.7L Cummins, the onboard monitoring system will determine the interval, but a general guideline is 7,500 miles. You should also change the fuel filters on the Cummins at every oil change.

Drain Plug Torque

• 6.4L HEMI V8 Drain Plug Torque: 25 ft-lbs. The drain plug is located on the bottom of the oil pan.
• 6.7L Cummins Drain Plug Torque: 37 ft-lbs. The drain plug is located on the driver's side of the oil pan.

Always use a new crush washer or drain plug gasket if equipped to prevent leaks. It is recommended to replace the drain plug itself on the Cummins engine every few oil changes as the seal is integrated.

How to Change the Oil

Changing the oil on a Ram 3500 is a straightforward process.

1. Run the engine for 2-3 minutes to warm the oil.
2. Park on a level surface and engage the parking brake.
3. Place a drain pan under the oil drain plug.
4. Remove the plug and allow the old oil to drain completely.
5. (Optional) Send a sample of your used oil to a lab for analysis to monitor engine health.
6. Clean the drain plug and surrounding area, install a new gasket (if applicable), and torque the plug to spec.
7. Move the drain pan under the oil filter. Use an oil filter wrench to loosen and remove the old filter. Be prepared for some oil spillage.
8. Wipe the filter mounting surface clean. Apply a thin coat of new oil to the gasket of the new filter.
9. Spin on the new filter until the gasket makes contact, then tighten it an additional three-quarters to one full turn. Do not overtighten.
10. Remove the oil fill cap and add the correct amount and type of new oil using a funnel.
11. Replace the fill cap, start the engine, and let it run for 30 seconds while you check for leaks at the drain plug and filter.
12. Shut off the engine, wait 5-10 minutes for the oil to settle, and re-check the oil level with the dipstick, adding more if necessary.
13. Reset the oil life monitor through the instrument cluster display.

Common Issues / Tips

• Access: The 6.7L Cummins holds a large amount of oil. Ensure your drain pan has a capacity of at least 15 quarts to avoid overflows.
• Filter Location: The oil filter on the 6.4L HEMI is easily accessible from underneath the front of the vehicle. The filter on the 6.7L Cummins is located on the passenger side of the engine block and may require a specific cap-style wrench for easy removal, as it can be difficult to grip otherwise.
• Fuel Filters (Cummins): For the 6.7L Cummins, it is critical to change both the engine-mounted and chassis-mounted fuel filters at the same interval as your oil change. Contaminated fuel is a leading cause of failure for the high-pressure fuel system.
• Oil Viscosity: Pay close attention to the recommended viscosity. Using a heavier oil than specified in the 6.4L HEMI can cause issues with the Multi-Displacement System (MDS) that deactivates cylinders to save fuel.
• Resetting the Monitor: Failure to reset the oil change indicator can lead to persistent dash warnings. The procedure can be found in the owner's manual and is typically performed using the steering wheel controls and the main instrument display.

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