You need to replace the rack. It leaks fluid into the rubber boot, and then the fluid leaks out from there. I bought a used one at a junk yard for $100 instead of buying a rebuilt. new is out of the question price wise. you either have a sim or a trw rack. You can tell which kind by looking at your id plate on your car. if the last number is a 4, you have a trw rack. if the last number is a 5 you have a sim rack. I was told both racks are identical physically, so they are interchangeable. I replaced mine with a like kind sim rack for a low mileage collision total vehicle. My indie mech did the job in around 2 hours.