Road Angels

Removing your old fluid, cleaning the system, and replacing the fluid disposes of the harmful sediments and protects your power steering components from wear or damage. ... When to service the system: Every vehicle has a different mileage interval for inspecting your power steering system..

In general, it is good to remember to change the fluid at least every two years, if not more often. This equates to about every 50,000 miles. Again, take a look at the owner's manual, as some manufacturers may suggest doing this more or less frequently.