Hydraulic power steering uses fluid to make the wheel easier to turn. Many newer cars use electric power steering with no fluid at all, so the first step is knowing which type your car has.
50k-100k mi
hydraulic flush interval
$75-$150
flush cost
📊 Quick Comparison
System Type
Service
Cost
Hydraulic PS
flush 50k-100k mi
$75-$150
Electric PS (EPS)
no fluid
n/a
Typical interval
For hydraulic systems, a common recommendation is to change or flush the power steering fluid every 50,000 to 100,000 miles, though many manufacturers do not list a fixed interval and instead ask you to check the level and condition. Follow your owner's manual.
Use the exact fluid type specified; some systems use ATF, others a dedicated PS fluid
Check the level with the engine off and cold unless the manual says otherwise
Electric power steering
Many modern vehicles use electric power steering (EPS), which has no hydraulic fluid to service. If your car has EPS, there is no power steering fluid to flush. Check your manual or reservoir to be sure.
Signs it may need service
On hydraulic systems, a whining or groaning noise when turning, stiff or jerky steering, or dark, dirty fluid can indicate the fluid needs attention. A low level often points to a leak.
Do not ignore leaks
A steadily dropping reservoir means a leak in a hose, pump, or the rack. Topping off only masks the problem, so have leaks inspected.
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❓ FAQ
Does my car have power steering fluid?
Only if it uses hydraulic power steering. Many newer cars use electric power steering with no fluid. Check your owner's manual or look for a reservoir under the hood.
How often should I flush power steering fluid?
On hydraulic systems, roughly every 50,000 to 100,000 miles is common, but many makers only ask you to check condition. Follow your manual.
What fluid does power steering use?
It depends on the vehicle. Some use automatic transmission fluid, others a dedicated power steering fluid. Use exactly what the manual or cap specifies.
Why is my steering whining?
On hydraulic systems, a whine when turning can mean low or aerated fluid, often from a leak. Check the level and have it inspected.
Can I just top off the fluid?
Topping off is fine short term, but a level that keeps dropping means a leak that needs repair rather than repeated refills.