2014 Freightliner M2 106 Transmission Fluid Type, Capacity, Filter, and Service

Quick Answer

The 2014 Freightliner M2 106 is most commonly equipped with an Allison 3000 Series automatic transmission. Manual transmissions from Eaton Fuller are also common.

• Transmission Make/Model: Allison 3000 Series (most common automatic)
• OEM Fluid Spec (Allison 3000 Series): Allison TES 295 or TES 668 approved fluid. Older models may have originally specified DEXRON-III, but TES 295/668 is the superior upgrade.
• Drain & Fill Capacity (Allison 3000 Series): Approximately 19-23 quarts (18-22 liters) depending on pan depth and cooler size.
• Full Overhaul Capacity (Allison 3000 Series): Approximately 29-32 quarts (27.4-30.2 liters) for a complete system flush and dry fill.
• Filter OEM Part Number (Allison 3000 Series - Internal): Verify with dealer or service manual, as there are different filter kits depending on the specific model and pan configuration. Common kits include internal and external filters.
• Recommended Service Interval (Allison 3000 Series):
  • Normal Duty: Initial change at 75,000 miles or 36 months, then every 150,000 miles or 48 months with TES 295/668 fluid and Allison genuine filters.
  • Severe Duty/Towing: Initial change at 25,000 miles or 12 months, then every 50,000 miles or 24 months with TES 295/668 fluid and Allison genuine filters.

Fluid Type Explained

For the Allison 3000 Series transmission in your 2014 Freightliner M2 106, using the correct transmission fluid is paramount for longevity and performance. Originally, some Allison transmissions specified DEXRON-III fluid. However, Allison Transmission has since developed and highly recommends their proprietary Allison TES 295 specification for extended drain intervals and enhanced protection. More recently, Allison TES 668 has superseded TES 295, offering even greater performance and protection, particularly in terms of sheer stability, oxidation resistance, and friction durability.

Fluids meeting the TES 295 or TES 668 specifications are synthetic-based and designed to withstand the high temperatures and stresses inherent in commercial vehicle operations. They provide superior thermal stability, oxidation resistance, and wear protection compared to conventional ATF fluids. Using a fluid that meets or exceeds these specifications is crucial for maintaining your transmission’s warranty and ensuring optimal operation.

Do not use generic DEXRON-III/MERCON fluids unless specifically stated in your owner’s manual as the primary recommendation and you plan on significantly shorter service intervals. Always verify with your vehicle's owner