Approximately 11 quarts for a drain-and-fill with a new filter; about 15–16 quarts for a full transmission flush. Exact amounts depend on the specific 46RE/46RH automatic transmission and the service method used.
The 2002 Ram 1500 with a 5.9-liter V8 typically relies on an automatic transmission in the 46RE/46RH family. Fluid capacity can vary slightly depending on whether you replace the filter, perform a full flush, or service auxiliary components like the torque converter. This article outlines typical capacities and practical steps for planning a transmission fluid service on this model.
Typical transmission fluid capacities by service method
The figures below reflect common service practices for this model and can vary by transmission variant and software. Use your vehicle’s manual or a trusted service guide for precise numbers.
Common capacity scenarios
- Drain-and-fill with a new filter: about 11 quarts
- Full transmission flush (system-wide replacement): about 15–16 quarts
These ranges cover the majority of drain-and-fill and flush cases for a 2002 Ram 1500 with a 5.9L engine. Exact quantities depend on whether the transmission is a 46RE or 46RH variant and whether the torque converter is drained or replaced during service. Always verify with the service manual or dealer guidance for your specific vehicle.
Service steps and practical considerations
Planning a fluid change or flush? The following steps help ensure you have the right amount and avoid overfill or underfill, while accounting for the vehicle’s specifics.
- Identify the transmission variant (46RE or 46RH) to confirm the correct fluid specification and capacity.
- Warm up the transmission by driving briefly, then park on level ground and set the parking brake with the engine running or according to the service manual.
- If draining, remove the transmission pan bolts to drain old fluid, replace the filter if applicable, and reinstall the pan with a new gasket.
- For a drain-and-fill, start with roughly 11 quarts of ATF (adjust up or down based on pan size and filter change) and check level after cycling through gears and rechecking when warm.
- For a full flush, plan to circulate about 15–16 quarts of fresh ATF through the system, using a professional flush machine if possible.
- Recheck the fluid level with the engine warm and the transmission in Park or Neutral as specified; add or drain fluid to reach the correct full mark on the dipstick.
Post-service note: After completing the service, take a short test drive to confirm smooth shifting and recheck the level once more while the transmission is warm. Do not operate the vehicle if the level is significantly off the recommended range.
Summary
For a 2002 Dodge Ram 1500 with a 5.9-liter engine, typical practice is about 11 quarts of ATF for a drain-and-fill with a new filter, and roughly 15–16 quarts for a full system flush. Exact quantities depend on the transmission variant (46RE/46RH) and the specific service performed. Always consult the owner's manual or a qualified technician to confirm the precise amount for your vehicle.