2015 Ram 2500 Transmission Fluid & Service

Quick Answer

• Transmission Make/Model: 68RFE (6.4L HEMI V8) or Aisin AS69RC (6.7L Cummins Diesel)
• OEM Fluid Spec: Mopar ATF+4 (68RFE) or Mopar ASRC (Aisin AS69RC)
• Drain & Fill Capacity: ~6.5 quarts (68RFE) or ~7.2 quarts (Aisin AS69RC)
• Full Overhaul Capacity: ~11.5 quarts (68RFE) or ~16 quarts (Aisin AS69RC)
• Filter OEM Part Number: Verify with dealer or service manual.
• Recommended Service Interval: 30,000 miles (severe) to 100,000 miles (normal)

Fluid Type Explained

The 2015 Ram 2500 was factory-equipped with one of two automatic transmissions, each requiring a specific fluid. The 6.4L HEMI V8 engine is paired with the Chrysler-built 68RFE 6-speed automatic, which requires Mopar ATF+4 fluid. Using any other fluid can lead to poor shift quality and transmission damage.

The 6.7L Cummins Turbo Diesel engine is mated to the more robust Aisin AS69RC 6-speed automatic. This transmission requires a unique fluid, Mopar ASRC (Automatic Transmission Fluid for Aisin Seiki), which is not interchangeable with ATF+4 or other common fluid types. Always verify the correct fluid for your specific transmission to ensure longevity and proper function.

Service Procedure

A transmission service can be performed in two ways: a "drain and fill" or a full "fluid exchange."

• Drain and Fill: This is the most common method, involving draining the fluid from the transmission pan, replacing the filter(s), and refilling with fresh fluid. This method typically replaces about half of the total fluid in the system, as a significant amount remains in the torque converter and cooler lines.

• Fluid Exchange: This procedure uses a specialized machine to connect to the transmission cooler lines and exchange nearly all of the old fluid for new. While more thorough, it is also more expensive and may not be necessary for every service interval.

For the 2015 Ram 2500, a drain and fill service including a filter change is the manufacturer-recommended procedure and is sufficient for most owners.

Service Interval

Recommended service intervals vary based on how the truck is used.

• Normal Duty: For trucks that see mostly highway driving with light loads, a transmission service interval of up to 100,000 miles may be acceptable.

• Severe Duty / Towing: If you frequently tow heavy loads, operate in dusty or off-road conditions, or use your truck for commercial purposes, you should follow the severe duty schedule. This calls for a transmission service every 30,000 to 60,000 miles to prevent premature wear and overheating.

Common Transmission Problems

• 68RFE: This transmission is generally reliable but can have issues with valve body and solenoid pack failures, leading to erratic shifting. Overheating, especially when towing beyond the truck's limits, can accelerate wear on clutches and the torque converter.

• Aisin AS69RC: Known for its durability, the Aisin transmission has fewer common issues. Some owners report harsh shifting, which can sometimes be addressed with a software update from the dealer. As with any transmission, ensuring the fluid is clean and at the correct level is the key to a long service life.

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