The 2018 Acura TLX uses Honda/Acura Automatic Transmission Fluid DW-1. Dexron or Mercon variants are not approved for this transmission.
In this article, we explain what ATF DW-1 is, how to verify you’re buying the right fluid, and practical notes for sourcing and maintaining the TLX’s automatic transmission fluid.
ATF DW-1 explained
DW-1 is the specification Honda/Acura require for automatic transmissions in most mid-2010s to present models, including the TLX. It is formulated to match the friction characteristics, shifting performance, and protection needs of the TLX’s 9-speed automatic. Using a fluid not labeled DW-1 can lead to degraded shifting, clutch wear, or other transmission issues.
DW-1 versus other ATF specifications
Dexron and Mercon fluids are different formulations designed for other brands and generations of transmissions. The TLX’s transmission is calibrated for DW-1, so substituting with a non-DW-1 fluid is not recommended and can affect performance and warranty coverage. Always check the bottle for the DW-1 designation and confirm it’s intended for Honda/Acura applications.
Where to source DW-1 and how to verify
To ensure you purchase the correct fluid, seek products explicitly labeled as ATF DW-1 or Honda/Acura DW-1. The following sources are commonly reliable for acquiring DW-1 and related guidance:
- Official Honda/Acura dealers and service centers
- Authorized auto parts retailers that stock Honda/Acura ATF DW-1
- Online retailers with product listings clearly stating “ATF DW-1” for Honda/Acura
- Honda/Acura official service literature or fluids catalogs
Always verify the exact specification before purchasing, and avoid mixing DW-1 with other ATFs. If in doubt, consult your owner's manual or ask an Acura service advisor.
Notes on maintenance and service intervals
For the TLX, refer to the owner’s manual for recommended transmission fluid change intervals and capacity. The fluid type remains DW-1, and the service interval can vary based on driving conditions and model year. When performing a change, use the proper DW-1 fluid and consider a professional service if you’re not experienced with automatic transmission drain-and-fill procedures.
Summary
In short, a 2018 Acura TLX requires ATF DW-1. Use only DW-1 to ensure proper shifting, protection, and warranty compliance. Verify the specification on the bottle, source it from reputable dealers or retailers, and consult the owner’s manual for capacity and service guidance. Keeping the correct fluid in your TLX helps preserve performance and longevity.