2018 Ram ProMaster Oil Capacity & Filter

The 2018 Ram ProMaster with the 3.6L Pentastar V6 engine takes 6 quarts (5.7 liters) of 5W-20 engine oil.

Quick Answer

• Oil Capacity: 6 quarts (5.7 liters)
• Recommended Oil Weight: 5W-20
• Oil Specification: API SN PLUS or later, or an equivalent Chrysler MS-6395 approved oil. It is also recommended to use oil that meets ILSAC GF-5 or GF-6 standards.
• **Oil Filter (3.6L Pentastar V6):
  • OEM: Mopar MO-339
  • Wix: 57526
  • Fram: CH11665

Capacity by Engine Option

Oil Change Interval

Normal Duty: Change your engine oil and filter every 10,000 miles (16,000 km) or 12 months, whichever comes first.

Severe Duty: If you operate your 2018 Ram ProMaster under severe conditions (e.g., frequent short trips, extreme temperatures, towing, dusty conditions, extensive idling), it is recommended to change your engine oil and filter every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Drain Plug Torque

The oil drain plug on the 2018 Ram ProMaster (3.6L Pentastar V6) should be torqued to 20 ft-lbs (27 Nm). Always use a new drain plug crush washer each time you perform an oil change to ensure a proper seal and prevent leaks. The OEM drain plug crush washer is typically a fiber or metal-reinforced rubber gasket.

How to Change the Oil

1. Gather Supplies: New oil, new oil filter, oil filter wrench, drain pan, socket wrench, proper socket for the drain plug, new drain plug washer, rags, jack and jack stands (if needed).
2. Warm Up Engine (Optional): Run the engine for a few minutes to warm the oil, which helps it drain more easily.
3. Lift and Secure: Safely raise the front of the vehicle using a jack and secure it with jack stands. Always prioritize safety.
4. Locate Drain Plug: Place the drain pan under the oil pan. Locate the drain plug, usually on the lowest point of the oil pan.
5. Drain Oil: Carefully loosen and remove the drain plug, allowing the old oil to drain completely into the pan. This can take several minutes.
6. Replace Drain Plug: Once the oil has drained, replace the drain plug with a new crush washer and tighten it to the specified torque of 20 ft-lbs.
7. Remove Oil Filter: Locate the oil filter. Place the drain pan underneath to catch any residual oil. Use an oil filter wrench to loosen and remove the old filter.
8. Prepare New Filter: Apply a thin coat of new engine oil to the gasket of the new oil filter. This helps create a good seal.
9. Install New Filter: Hand-tighten the new oil filter until the gasket makes contact with the engine. Then, tighten it an additional 3/4 to 1 full turn. Do not overtighten.
10. Add New Oil: Carefully pour the recommended amount and type of new oil into the engine's oil fill cap. Start with a bit less than the full capacity, then check.
11. Check Level: After adding the oil, wait a few minutes for it to settle, then check the oil level with the dipstick. Add more oil if necessary until it reaches the 'Full' mark.
12. Inspect for Leaks: Start the engine and let it run for a few minutes. Check for any leaks around the drain plug and oil filter.
13. Lower Vehicle: Turn off the engine, then safely lower the vehicle.
14. Dispose of Old Oil: Properly dispose of the old engine oil and filter at an authorized recycling center.

Common Issues / Tips

• Oil Consumption: Some 3.6L Pentastar engines, especially in earlier years, have been known to consume a small amount of oil between changes. It's a good practice to check your oil level regularly, especially if you drive longer distances or under severe conditions.
• PCV Valve: A clogged or failing PCV (Positive Crankcase Ventilation) valve can contribute to increased oil consumption or internal engine pressure issues. It's a relatively inexpensive part to inspect and replace if needed.
• Oil Filter Housing Leaks: While more common on earlier Pentastar engines, inspect the oil filter housing for signs of leaks. The housing is made of plastic and can develop cracks over time, especially from over-tightening the oil filter cap.
• Synthetic Oil: While not strictly required by all specifications for typical driving, using a high-quality full synthetic 5W-20 oil can offer enhanced protection and stability, particularly beneficial for the larger duty cycles often experienced by ProMaster vans.
• Follow Maintenance Schedule: Given the ProMaster's role as a workhorse, adhering strictly to the manufacturer's recommended oil change intervals and using the correct oil is crucial for engine longevity.

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