How much transmission fluid does an RSX take?
Across the RSX lineup, the amount of transmission fluid needed depends on the transmission type: about 2.0 quarts (approximately 1.9 liters) for the 5-speed manual and roughly 9–10 quarts (about 8.5–9.5 liters) for the 4-speed automatic.
The Acura RSX, produced from 2002 to 2006, offered two transmissions. Knowing the correct capacity helps guide maintenance, whether you’re performing a simple drain-and-fill or a full transmission service. The figures below reflect typical capacities cited in service literature; always verify against your exact model year and consult the owner's manual or a qualified technician for precise guidance.
Manual transmission (5-speed)
For RSX models equipped with the 5-speed manual, the total capacity for a standard drain-and-fill is typically around 2.0 quarts (about 1.9 liters). Use a manual transmission fluid that meets Honda/Acura specifications (commonly MTF or an approved equivalent).
Note: Fill the transmission until the fluid begins to seep out of the fill hole with the vehicle level and the engine warm. This ensures a proper level for shifting and lubrication.
Automatic transmission (4-speed)
RSX models equipped with the 4-speed automatic typically require about 9–10 quarts (roughly 8.5–9.5 liters) of ATF for a complete drain-and-fill. The exact capacity can vary by year and whether you replace the pan filter or service the torque converter.
Check the owner's manual for the correct ATF specification (Honda ATF-Z1 or DW-1 depending on year) and follow the service procedures recommended by Honda/Acura for level checking and refilling.
Summary
In short, the RSX manual transmission uses about 2 quarts of fluid, while the automatic transmission uses about 9–10 quarts. Always confirm by year/model and follow the manual’s guidance for the correct fluid type and leveling procedure to ensure reliable shifting and lubrication.
