Do Honda and Acura use the same power steering fluid?

Not automatically. Honda and Acura do not rely on a single universal power steering fluid across all models; some require Honda Power Steering Fluid (PSF) while others need Dexron/Mercon automatic transmission fluid (ATF) or another specification. Always follow the exact specification listed in your owner's manual or on the reservoir label to avoid damaging the system.

Why the fluids can differ between models

Although Honda owns Acura, the hydraulic steering systems in different model lines are designed around specific fluid formulations. PSF and ATF have different additives, viscosities, and seal compatibility. Using the wrong fluid can lead to reduced steering performance, seal damage, or pump wear. Because the requirements change as models evolve, the correct fluid is not interchangeable across every year and trim.

Common fluid options you might encounter

Below are the two main categories you may see when checking your vehicle’s specifications. The exact choice depends on your model and year.

• Honda Power Steering Fluid (PSF) – A dedicated fluid used by many Honda and Acura systems. It’s formulated to protect seals and maintain smooth operation. Do not mix PSF with ATF unless the manual explicitly allows it.


• Automatic Transmission Fluid (ATF) – Dexron/Mercon-family ATFs are used in some Honda/Acura models for their hydraulic steering systems. Use ATF only when the manual specifies ATF for the steering system, and avoid mixing with PSF.

In short, the correct fluid depends on your specific vehicle and year; always verify with the owner's manual or a dealer if you’re unsure.

How to verify the right fluid for your vehicle

To determine which fluid your car requires, follow these steps or consult a trusted service source.

1. Check the owner's manual under the specifications or maintenance section for the exact power steering fluid type (PSF, ATF, or another specification).


2. Inspect the power steering reservoir cap or nearby label for a designation such as “PSF” or “ATF.” Some reservoirs may show a part number or symbol instead of text.


3. Consider the model year and system type; Honda/Acura hydraulic steering setups have evolved over time, and mid‑generation changes are not uncommon.


4. If in doubt, contact a Honda/Acura dealer or a trusted shop to confirm the correct specification before topping up or draining the system.


5. Use only the fluid the manual specifies. Do not interchange PSF and ATF unless explicitly allowed by the manufacturer.

Following these steps will help ensure you use the correct fluid and protect your steering system from damage.

Practical tips and common pitfalls

Keep these practical considerations in mind to avoid issues with your power steering fluid.

• Do not mix PSF and ATF. Mixing can compromise lubrication and lead to leaks, foaming, or pump wear.


• Rely on the specification, not color alone. Fluid color can vary and does not reliably indicate compatibility.


• When topping off, avoid overfilling, which can cause foaming and increased pressure in the system.


• If you notice stiffness, unusual noises, or leaks, have the system inspected by a professional, since incorrect fluid can accelerate wear and failure.

Summary

Honda and Acura do not share a single, universal power steering fluid. The correct fluid depends on the specific model, year, and system design. Always verify the required fluid from the owner’s manual or the reservoir label, and avoid mixing PSF with ATF unless explicitly allowed. When in doubt, consult a dealer or qualified technician to protect your steering system and maintain performance.

Is power steering fluid the same for all vehicles?

No, power steering fluid is not universal, and using the wrong type can damage your vehicle's power steering system. The correct fluid depends on your car's make and model and can be found by checking the owner's manual or the power steering fluid cap. While some modern vehicles use a "universal" power steering fluid, many still require specific types, such as certain Automatic Transmission Fluids (ATF) or specific synthetic fluids. 
Why using the wrong fluid is risky

• Damage to components: The wrong fluid can cause seals and other rubber parts to degrade and can damage the power steering pump.
• Reduced performance: You may experience a stiffer steering wheel or reduced steering performance.
• System contamination: The wrong fluid can contaminate the system, leading to premature wear. 

How to find the correct fluid

• Check the owner's manual: This is the most reliable source for your vehicle's specific requirements. 
• Look at the fluid cap: Many caps have the required fluid type printed on them. 
• Consult a professional: If you're unsure, an automotive professional can help you identify the correct fluid. 

Do Honda and Acura use the same parts?

Yes, Honda and Acura share many parts, especially for routine maintenance items like filters, belts, and brakes, because Acura is the luxury division of Honda. While many core components are shared, Acuras have more premium features, so some parts for advanced systems, such as certain drivetrain components or specialized suspension parts, are unique to Acura. 
Shared parts

• Routine maintenance items: Oil filters, air filters, brake pads, and spark plugs are often identical or nearly identical between the two brands, which can help keep maintenance costs down for Acura owners. 
• Engines and transmissions: Many Acura models use the same engine platforms as their Honda counterparts. For example, the Acura MDX and Honda Pilot share similar core engine and transmission components. 
• Under-the-hood components: Many sensors, pulleys, and engine mounts are the same, as they are often manufactured for the broader Honda market. 
• Fluids: The same fluids, such as transmission fluid, brake fluid, and engine coolant, are often used for both brands. 

Different/unique parts

• Interior and technology: Acuras have upgraded materials, more insulation for a quieter cabin, and more advanced infotainment and driver-assistance systems, so these components are different. 
• Suspension and drivetrain: While the basic suspension components may be similar, Acuras often have different tuning and some unique parts, such as advanced SH-AWD systems. 
• Cosmetic and trim: Exterior body panels, grilles, and interior trim are, of course, specific to each brand. 

How to confirm part interchangeability

• Cross-reference part numbers: A reliable way to check if a specific part is interchangeable is to cross-reference the part number online using a parts lookup tool for both a Honda and an Acura, notes Reddit users and RM Automotive Inc.. 
• Check with a mechanic: Mechanics specializing in either brand, like RM Automotive Inc. and Rallye Motor Company, can confirm part interchangeability. 
• Verify with dealerships: Honda dealerships can perform routine maintenance on Acuras, but a more complex repair may require Acura-specific expertise, notes McGrath Acura of Libertyville. 

Do Hondas use special power steering fluid?

It's essential that you only use genuine Honda fluid in your Honda vehicle. Using non-Honda fluid can cause deterioration and reduce the life of the system.

Is Acura power steering fluid the same as Honda?

VPS Power Steering Fluid for Honda®/Acura® is a full-synthetic fluid that is specifically formulated for Honda/Acura with dedicated additives to meet the demands of most power steering systems.