The Ridgeline uses Honda Genuine Power Steering Fluid (PSF) or Dexron II/III automatic transmission fluid (ATF). Do not mix different types of fluid in the system.
For the 2007 Ridgeline, the power steering system is a hydraulic setup with a dedicated reservoir. Official guidance from Honda typically lists two acceptable options: Honda PSF or Dexron II/III ATF. Some owners and shops also note that Dexron VI can be compatible in a pinch, but it’s best to confirm with your owner’s manual or a dealer if you’re unsure.
Fluid options
Below are the commonly accepted fluids for the Ridgeline’s power steering system. Choose one type and use it consistently to avoid compatibility issues.
- Honda Genuine Power Steering Fluid (PSF) — Honda’s preferred fluid designed specifically for their power steering systems.
- Dexron II or Dexron III ATF — An automatic transmission fluid that is widely listed as an acceptable substitute when PSF isn’t available.
- Dexron VI ATF — Some sources note compatibility; verify with Honda’s current guidance or your service manual before use.
Use only one type of fluid in the system. Avoid mixing different brands or types, and avoid using other hydraulic fluids that aren’t listed as compatible.
Maintenance tips: checking and topping up
Keeping the power steering fluid at the proper level and condition helps prevent steering effort increases, noise, and potential leaks. The following steps outline a typical maintenance check and top-up process.
- Park the vehicle on level ground and set the parking brake. With the engine off, locate the power steering fluid reservoir and clean the cap area to prevent contamination.
- Check the fluid level on the dipstick or level marks indicated on the reservoir. If the level is low, add the recommended fluid a small amount at a time until the correct level is reached.
- When topping up, use the exact fluid type you use for the system (PSF or ATF as specified). Do not mix different types in the reservoir.
- Start the engine and turn the steering wheel from lock to lock several times while the engine is idling to circulate the fluid and bring it to operating temperature. Check for smooth operation and listen for any unusual noises.
- With the engine running, recheck the fluid level and adjust as needed. If you notice consistent loss of fluid, leaks, or metallic noises, have the system inspected by a professional.
Regularly monitoring the fluid level and condition can extend the life of the power steering pump and related components.
Bleeding and air removal
If you’ve recently drained or replaced the fluid, you may need to bleed air from the system to restore smooth steering performance. This usually involves cycling the steering from side to side with the engine running and ensuring the fluid level remains within the proper range.
Summary
For a 2007 Honda Ridgeline, the recommended power steering fluids are Honda Genuine PSF or Dexron II/III ATF, with Dexron VI as a potential alternative only if supported by your manual. Always use the same fluid type throughout the system, avoid mixing fluids, and consult your owner's manual or a dealership if you’re unsure about compatibility. Regular checks and proper topping up help maintain steering performance and prevent damage.