Power steering fluid is one of those fluids that gets overlooked during routine maintenance — it doesn’t have a visible dipstick like oil, and it doesn’t have a fixed service interval like coolant. But degraded or low power steering fluid causes expensive pump and steering rack damage, and it’s entirely preventable with periodic attention.
Here’s how to check your power steering fluid and how to know when it needs service.
How to Check Power Steering Fluid
Not all modern vehicles have hydraulic power steering systems — electric power steering (EPS), common on vehicles from 2010 onward, has no fluid to check. If your car has EPS, you’ll see no power steering reservoir in the engine bay. Check your owner’s manual to confirm which system your vehicle uses.
For hydraulic power steering: locate the reservoir (usually labeled with a steering wheel symbol, often near the firewall on the passenger side). Most reservoirs have MIN/MAX markings on the side for level checking without opening the cap. If you open the cap, the dipstick on the cap itself shows the level — check it when cold.
The fluid should be clear to slightly amber. Dark brown or black fluid, or fluid that smells burnt, indicates oxidation and contamination — it’s time for a flush. Foam or milky appearance indicates water contamination, which is a more serious issue requiring immediate attention.
Power Steering Service Intervals and Common Problems
Power steering fluid doesn’t have a universal service interval — some manufacturers say ‘as needed’ (check condition), others specify 50,000–100,000 miles. At Norm’s Auto Clinic, we recommend inspecting the fluid condition at every other oil change and flushing it every 60,000–80,000 miles or if it shows any signs of contamination.
A whining, groaning, or squealing sound when turning — especially at low speeds or when turning to the full lock position — is the classic symptom of low power steering fluid or a failing pump. Don’t ignore this — continuing to drive with a whining power steering pump dramatically shortens its life, and a pump replacement costs –.
Power Steering Service at Norm’s Auto Clinic
We check power steering fluid condition during routine maintenance and can perform a power steering flush on any hydraulic system vehicle. If you hear whining from your steering system, we’ll diagnose whether it’s fluid, pump, or rack-related.
Call (918) 279-8100 or visit 11150 S 265th E Ave, Coweta, OK 74429 — Monday–Friday, 8am–5pm.
