What transmission fluid for 2006 Acura RSX?
The 2006 Acura RSX uses different transmission fluids depending on whether it has an automatic or a manual gearbox. In short: automatic transmissions require ATF DW-1, while manual transmissions require Honda Genuine Manual Transmission Fluid (MTF) or an equivalent GL-4 gear oil that meets Honda’s MTF specification.
Automatic transmission: fluid type and options
The RSX's 5-speed automatic transmission calls for Honda ATF DW-1. Using the correct fluid is essential for smooth shifts and long-term reliability. The following options are commonly recommended by Honda/Acura enthusiasts and service guides.
- Honda Genuine ATF DW-1 (or an equivalent ATF labeled as DW-1 compatible by the manufacturer)
- Aftermarket ATFs that explicitly state compatibility with Honda/Acura DW-1 specifications (verify via the product sheet or dealer guidance)
Conclusion: Use DW-1 or an approved equivalent, and follow the vehicle’s service interval and capacity guidelines as outlined in the owner's manual or service literature.
Manual transmission: fluid type and options
The 2006 RSX with a manual transmission requires a manual transmission fluid that meets Honda’s MTF specification. Use Honda Genuine MTF or an equivalent GL-4 gear oil that is approved for Honda MTF use.
- Honda Genuine Manual Transmission Fluid (MTF)
- GL-4 75W-90 gear oil that specifically meets Honda’s MTF specification or is explicitly approved for Honda MTF use
Conclusion: For the manual gearbox, select MTF or an equivalent GL-4 oil that is explicitly compatible with Honda MTF, and perform periodic maintenance per the owner's manual.
Important notes
Always verify the exact specification with the owner’s manual or a Honda/Acura dealer, as specifications can have region-specific updates. Using fluids that do not meet DW-1 (automatic) or MTF (manual) specs can cause shifting problems, wear, or long-term damage.
Summary
In brief, the 2006 Acura RSX requires ATF DW-1 for the automatic transmission and Honda MTF (or an equivalent GL-4 oil approved for MTF) for the manual transmission. Stick with OEM or OEM-approved fluids and adhere to the recommended maintenance intervals for optimal performance.
