2025 Ram ProMaster Oil Capacity & Filter Reference

The 2025 Ram ProMaster requires exactly 6.0 quarts (5.6 liters) of 0W-20 fully synthetic engine oil when performing an oil and filter change. As an ASE-certified master technician, I regularly service these commercial vans, and keeping up with the exact fluid specifications is critical for the longevity of the Pentastar V6 engine under heavy fleet use.

Below is your comprehensive reference guide for the 2025 Ram ProMaster oil capacity, filter part numbers, and torque specs.

Quick answer

• Oil Capacity: 6.0 quarts (5.6 liters) with a filter change.
• Recommended Oil Weight: 0W-20 Fully Synthetic.
• Oil Specification: API SP / ILSAC GF-6A, Chrysler Material Standard MS-6395.
• OEM Oil Filter: Mopar MO-349 (Part # 68191349AA or 68191349AC).
• Aftermarket Oil Filters: Fram CH11665, WIX WL10010, Mobil 1 M1C-254A.

Capacity by engine option

For the 2025 model year, the Ram ProMaster in the North American market is exclusively powered by the updated 3.6L Pentastar V6 engine.

Oil change interval

The Ram ProMaster is equipped with an automatic Oil Life Monitor system that will alert you when a change is due. However, as a best practice for commercial vehicles, follow these mileage-based intervals:

• Normal Duty: Up to 10,000 miles or 12 months, whichever comes first.
• Severe Duty: 4,000 to 5,000 miles or 6 months. (Severe duty includes extensive idling, frequent stop-and-go delivery driving, towing, or operating consistently with maximum payload).

Note: Never exceed 10,000 miles or 12 months between oil changes, regardless of what the Oil Life Monitor displays.

Drain plug torque

• Oil Pan Drain Plug: 20 ft-lbs (27 Nm).
• Drain Plug Washer: The ProMaster utilizes a drain plug with a built-in molded rubber seal. Inspect this seal at every change. If it is flattened, cracked, or leaking, replace the entire drain plug.
• Oil Filter Housing Cap: 18 ft-lbs (25 Nm). Do not overtighten this plastic cap, as it is prone to cracking.

How to change the oil

1. Prepare the van: Park the ProMaster on a level surface, engage the parking brake, and allow the engine to cool slightly so the oil is warm but not scalding.
2. Access the top side: Open the hood. Use a 24mm socket to loosen the plastic oil filter housing cap located at the top of the engine. Removing the cap first allows oil held in the housing to drain down into the pan.
3. Replace the filter: Pull the old cartridge filter out of the cap. Remove the old O-ring from the cap using a pick, lubricate the new O-ring with fresh oil, and install it. Snap the new filter cartridge into the cap and torque the assembly to 18 ft-lbs (25 Nm).
4. Drain the oil: Under the van, locate the 13mm drain plug on the rearward-facing side of the oil pan. Position your catch pan, remove the plug, and allow the oil to drain completely.
5. Reinstall drain plug: Inspect the rubber seal on the drain plug. Reinstall and torque to 20 ft-lbs (27 Nm).
6. Refill and check: Pour exactly 6.0 quarts of 0W-20 synthetic oil into the engine. Start the engine, let it idle for 30 seconds to circulate, and check for leaks. Shut off the engine, wait 5 minutes, and verify the fluid level on the dipstick.
7. Reset the Oil Life Monitor: Turn the ignition to the "ON/RUN" position (do not start the engine). Fully depress the accelerator pedal slowly three times within 10 seconds. Turn the ignition off.

Common issues / tips

• Oil Filter Housing Leaks: The 3.6L Pentastar V6 is notorious for oil cooler/filter housing leaks. When you tighten the plastic cap on top of the engine, overtightening can stress the lower housing body, leading to a massive oil leak down the back of the engine block. Always use a torque wrench set to 18 ft-lbs (25 Nm).
• Excessive Idling: Fleet vans spend a lot of time idling. Idling degrades engine oil faster than highway driving. If your ProMaster idles for long periods, strictly adhere to the Severe Duty interval (4,000–5,000 miles).
• Seating the Cartridge Filter: Ensure the nipple on the bottom of the new oil filter cartridge seats properly into the housing bypass valve. Forcing the cap down on a misaligned filter can snap the bypass valve, requiring a complete cooler assembly replacement.

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