2014 Ram 3500 — Oil Capacity & Filter Specs

The 2014 Ram 3500 takes between 7.0 and 12.0 quarts of engine oil depending on the engine—7.0 qt (6.6 L) for the 5.7L and 6.4L HEMI gas V8s, and 12.0 qt (11.4 L) for the 6.7L Cummins diesel.

Quick answer

• 6.7L Cummins Turbo Diesel (I6)
  • Oil capacity: 12.0 qt (11.4 L) with filter
  • Recommended weight: 5W-40 full synthetic for all-climate use; 15W-40 acceptable in warmer temps
  • Oil spec: API CJ-4 or CK-4, low-ash for DPF; meets Cummins CES 20081
  • Oil filter: OEM Mopar MO-285 (p/n 5083285AA); aftermarket: FRAM XG3976A (or PH3976A), WIX 57620
• 6.4L HEMI V8 (Gas)
  • Oil capacity: 7.0 qt (6.6 L) with filter
  • Recommended weight: 0W-40 full synthetic
  • Oil spec: Chrysler MS-12633 (API SN or later)
  • Oil filter: OEM part can vary by build—consult dealer with VIN; popular aftermarket: FRAM XG2, WIX 57899
• 5.7L HEMI V8 (Gas)
  • Oil capacity: 7.0 qt (6.6 L) with filter
  • Recommended weight: 5W-20 (synthetic or conventional)
  • Oil spec: Chrysler MS-6395 (API SN or later)
  • Oil filter: OEM part can vary by build—consult dealer with VIN; popular aftermarket: FRAM XG2, WIX 57899

Capacity by engine option

Oil change interval

• Diesel (6.7L Cummins): Follow the oil life monitor (OLM). As a rule of thumb, up to 15,000 miles/12 months in normal service with CJ-4/CK-4 oil. Severe duty (frequent towing, idling, dusty service, short trips, biodiesel use, or high fuel dilution) is commonly 7,500 miles/6 months or when the OLM calls sooner.
• Gas (5.7L & 6.4L HEMI): Follow the OLM, typically up to 10,000 miles/12 months for normal duty with the specified oil. Severe duty (heavy towing, short trips under 5 miles, extreme temps, dusty roads) is 5,000 miles/6 months.

Always defer to the dash OLM and your owner’s manual if they differ based on operating conditions.

Drain plug torque

• 6.7L Cummins: 37 ft-lb (50 N·m)
• 5.7L & 6.4L HEMI: 20 ft-lb (27 N·m)

Crush washer/gasket: Replace the sealing washer on the diesel if equipped. Many gas HEMI plugs use a captive/sealing design—inspect and replace the washer or plug if damaged.

How to change the oil

1. Warm the engine briefly, park level, and support the truck safely.
2. Remove the skid plate/undertray if fitted.
3. Place a large drain pan (the Cummins holds 12 qt) and remove the drain plug. Let it fully drain.
4. Remove the oil filter. On the Cummins, keep rags handy—pre-fill the new filter about halfway and oil the gasket. On HEMIs, light oil on the gasket is sufficient (do not overfill the canister).
5. Install a new crush washer if required and torque the drain plug to spec.
6. Spin on the new filter until gasket contact, then tighten 3/4 turn by hand (or follow filter’s torque spec).
7. Refill with the correct amount and grade. Start the engine, check for leaks, then shut off and top off to the full mark after a minute.
8. Reset the oil life monitor.

Common issues / tips for this generation (2013–2018 Ram HD)

• Diesel DPF trucks need low-ash oil (CJ-4/CK-4). Using the wrong oil can shorten DPF life.
• Fuel dilution can occur on the 6.7L with extended idling or frequent regens—shorten intervals and consider used-oil analysis if towing/hauling often.
• Pre-filling the 6.7L filter reduces dry starts; keep the element vertical to avoid spills.
• 6.4L HEMI prefers 0W-40 that meets MS-12633; quality full synthetic helps with valvetrain tick complaints. Keep to 7.0 qt.
• 5.7L HEMI requires 5W-20 to keep MDS working correctly—thicker oil can cause driveability issues.
• Watch for oil cooler/filter housing seepage on HEMI engines; address promptly to avoid mess on the block and exhaust.

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