I noticed a small leak in the power steering pump/resevoir. I checked the level in the resevoir and its is low but not empty, just at the add line. I started the engine and turned the wheel all the way in both dierection about 5 times and didn't notice any more fluid loss. Should I replace the pump or wait for it to fail? Can I add something like radiator stop leak and seal it up that way? Should I just refill the resevoir and see how long it takes to get low and if the leak isn't bad just live with it? Thanks in advance for any help.