2016 Freightliner M2 106 Oil Capacity & Filter Reference

A 2016 Freightliner M2 106 equipped with the Cummins ISB 6.7L engine requires between 18.5 and 29 quarts (17.5 to 27.4 Liters) of oil, depending on the specific oil pan configuration. Always verify the oil level on the dipstick after an initial fill and top off as needed.

Quick Answer: 2016 M2 106 (Cummins ISB 6.7L)

• Engine Oil Capacity: 18.5 - 29 quarts / 17.5 - 27.4 Liters (Varies by oil pan)
• Recommended Oil Weight: 15W-40 for most climates; 10W-30 for colder temperatures.
• Required Oil Specification: API CJ-4 (or newer, such as CK-4)
• Oil Filter Part Numbers:
  • OEM (Fleetguard): LF3970
  • Wix: 51607
  • Fram: PH3976A

Capacity by Engine Option

The 2016 Freightliner M2 106 was primarily offered with variations of the Cummins ISB 6.7L and the Detroit Diesel DD8 engine. Capacities vary based on which oil pan was installed by the factory or chassis upfitter.

Note: It is critical to confirm engine type and oil pan size before purchasing oil. When in doubt, start with the lower quantity, check the dipstick, and add oil in one-quart increments until the full mark is reached.

Oil Change Interval

For medium-duty commercial trucks like the M2 106, oil change intervals are dictated by hours of operation and fuel consumed, not just mileage. Adhering to the correct schedule is the single most important maintenance task to ensure engine longevity.

• Normal Duty: 15,000 miles, 500 hours, or 6 months, whichever comes first. This applies to vehicles that run at consistent highway speeds with minimal idling and light to moderate loads.
• Severe Duty: 10,000 miles, 350 hours, or 4 months, whichever comes first. This schedule is recommended for vehicles used in vocational applications such as construction, refuse, or local delivery, which involve frequent stopping, heavy idling, heavy loads, and operation in dusty environments.

Drain Plug Torque

Properly torqueing the drain plug is essential to prevent oil leaks and damage to the oil pan.

• Cummins ISB 6.7L Drain Plug Torque: 65 ft-lbs (88 Nm)
• Detroit Diesel DD8 Drain Plug Torque: 59 ft-lbs (80 Nm)

Always use a new crush washer or sealing washer with every oil change to ensure a proper seal. Do not overtighten the drain plug, as this can strip the threads in the oil pan, leading to a costly repair.

How to Change the Oil (Simplified)

1. Warm the Engine: Run the engine for 5-10 minutes to warm the oil, which helps it drain more completely.
2. Prepare for Draining: Place a large-capacity drain pan (minimum 8-gallon capacity recommended) under the engine oil pan drain plug.
3. Drain the Oil: Remove the drain plug and allow the oil to drain completely. This can take 15-20 minutes.
4. Replace Filter: While the oil is draining, locate and remove the oil filter using a filter wrench. Ensure the old filter gasket comes off with the filter. Apply a thin layer of new oil to the gasket of the new filter.
5. Install New Filter & Plug: Clean the filter mounting surface. Screw on the new filter until the gasket makes contact, then tighten it an additional 3/4 to one full turn by hand. Clean the drain plug, install a new sealing washer, and reinstall it, tightening to the specified torque.
6. Refill with Oil: Using a funnel, add the new oil through the oil fill cap on the valve cover. Start by adding approximately 75% of the expected capacity.
7. Check Level: Wait a few minutes, then check the oil level on the dipstick. Add oil as needed to reach the full mark. Do not overfill. Start the engine, let it run for a minute to circulate the oil, shut it off, wait 5-10 minutes, and re-check the dipstick, topping off if necessary.

Common Issues & Tips for This Generation

• Dipstick Accuracy: On ISB engines, it's common for the dipstick tube to not be perfectly seated, leading to inaccurate readings. Always verify the dipstick is fully seated before taking a reading.
• Oil Pan Variations: The single biggest point of confusion is the oil pan size. Upfitters often installed different pans depending on the chassis application (e.g., for PTO clearance). The only way to be 100% certain of your capacity is the 'drain and measure' method or by checking the dipstick carefully during a refill.
• Oil Analysis: For a fleet vehicle, consider using an oil analysis service like Blackstone Labs. This can help you safely extend drain intervals and provide early warnings of internal engine wear issues, saving significant money over the life of the truck.

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