Most Acura models use Honda/Acura ATF DW-1 power steering fluid. Always confirm with your owner's manual or the reservoir cap, especially for older or specialized models that may specify a different type.
Understanding Acura power steering fluid requirements
Acura’s power steering system typically requires automatic transmission fluid (ATF) rather than a dedicated hydraulic fluid. The exact specification matters: the prevailing standard across modern models is Honda/Acura ATF DW-1. Using the wrong fluid can affect steering feel, noise, and seals, so verify before topping up or flushing the system.
Typical fluid types you’ll encounter
These are the fluid categories you’re likely to see when shopping or servicing an Acura. Use only the one specified by the manufacturer for your model and year.
- Honda/Acura ATF DW-1 Power Steering Fluid — The standard recommendation for most modern Acura vehicles.
- Dexron II/III-based power steering fluids — Used in some older Acura models; should be used only if your manual explicitly permits it.
- Other ATFs labeled for power steering with explicit DW-1 compatibility — Acceptable only if your manual confirms compatibility with your model.
Conclusion: For most current Acura models, DW-1 is the safe, recommended choice. If you own an older model or a specialty variant, check the manual for Dexron II/III compatibility or any other approved specification.
Model-year guidance
Modern Acura models (approximately 2003–present)
In the vast majority of modern Acura vehicles, the power steering system is designed to use Honda/Acura ATF DW-1. This includes many sedans, SUVs, and performance models from the early 2000s onward. Reservoir caps and service manuals typically indicate DW-1, and Acura’s guidance generally prohibits mixing DW-1 with other ATFs.
- Honda/Acura ATF DW-1 Power Steering Fluid — The recommended fluid for most modern Acura models.
- DW-1-compatible brands — If labeled as DW-1 or compatible with DW-1, these are usually acceptable options from reputable manufacturers.
Conclusion: For modern Acuras, DW-1 is the standard and safest choice; always verify in the owner's manual if there’s any doubt.
Older Acura models (1990s–early 2000s)
Some older Acura models may have originally used Dexron II/III-based power steering fluids. If you own a vintage model or a pre-DW-1 era, consult the manual to confirm the exact specification and avoid mixing fluids, which can damage seals and performance.
- Dexron II/III-based P/S fluids — Applicable to certain older models only if the manual specifies compatibility.
Conclusion: For older models, follow the manual strictly. If upgrading from an older Dexron-based fluid to DW-1, a system flush and seal inspection are advisable per service guidance.
How to verify the right fluid for your Acura
To ensure you’re using the correct power steering fluid for your specific car, follow these steps before purchasing or adding fluid.
- Check the owner’s manual or the service/maintenance section for the exact specification (often “ATF DW-1” for modern models).
- Inspect the reservoir cap or any labeling on the power steering reservoir for the recommended fluid type.
- If you’re unsure, contact a Acura dealer or certified mechanic with your vehicle’s VIN for precise guidance.
- Avoid mixing fluids unless the manual explicitly allows it; if switching from an older Dexron-based fluid to DW-1, consider a professional flush.
Conclusion: The most reliable path is to follow the official specification printed in your manual or on the reservoir cap, and to consult a dealer if you’re uncertain about compatibility.
Summary
In most cases, Acura power steering systems use Honda/Acura ATF DW-1. This is the default recommendation for modern vehicles, while older models may allow Dexron II/III only if the manual states so. Always verify the exact specification for your model and year, and avoid mixing fluids to protect seals and steering performance. When in doubt, consult the owner’s manual or a dealer for precise guidance.