2019 Ram 3500 Transmission Fluid & Service

Quick answer

• Transmission Make/Model: Aisin AS69RC automatic transmission
• OEM Fluid Spec: Mopar ATF+4 (MS-9602)
• Drain & Fill Capacity: Approximately 7.5 - 8.5 quarts (verify with dipstick/level check procedure)
• Full Overhaul Capacity: Approximately 17.5 quarts (verify with service manual)
• Filter OEM Part Number: No serviceable external filter. Internal filters (strainers) are typically not replaced during routine service. For internal component replacement, verify with dealer.
• Recommended Service Interval: Normal Duty: 120,000 miles or 120 months. Severe Duty/Towing: 60,000 miles or 60 months.

Fluid type explained

The 2019 Ram 3500 equipped with the Aisin AS69RC heavy-duty automatic transmission requires Mopar ATF+4 (MS-9602) transmission fluid. This is a highly specific, synthetic-blend fluid engineered to meet the demanding requirements of this robust transmission. Using any other type of fluid can lead to premature wear, poor shift quality, overheating, and potentially catastrophic transmission failure. ATF+4 is a registered trademark of Chrysler Group LLC and is formulated to maintain consistent viscosity across a wide temperature range, provide excellent wear protection for gears and bearings, and ensure smooth, consistent shift performance throughout the life of the fluid.

It is crucial not to substitute ATF+4 with other fluids like Dexron, Mercon, or generic multi-vehicle ATFs. While some multi-vehicle fluids claim to be compatible with ATF+4, it is always safest and recommended to stick with the manufacturer's specified fluid to protect your investment and ensure optimal transmission operation. Always check the fluid bottle for the MS-9602 specification to confirm it meets the requirements for your AS69RC transmission.

Service procedure

For the Aisin AS69RC transmission in your 2019 Ram 3500, a drain and fill is the most common and generally recommended service procedure for routine maintenance. Unlike some other transmissions, the AS69RC does not have an easily accessible external spin-on filter that is replaced during a drain and fill. It utilizes internal screen-type filters (strainers) that are designed for the life of the transmission under normal operating conditions and are typically only accessed during a major overhaul or repair.

Drain and Fill: This procedure involves draining the fluid from the transmission pan and then refilling it with new fluid. This typically replaces approximately 7.5 to 8.5 quarts of fluid, which is about half of the total transmission capacity. While it doesn't replace all the fluid, it refreshes a significant portion and removes suspended contaminants. For this transmission, a drain and fill at recommended intervals is effective.

Full Exchange (Fluid Flush): A full fluid exchange or