Gunk M2704SPF Rack & Pinion and Power Steering Conditioner - 4 fl. oz.

Cheap Gunk M2704SPF Rack & Pinion and Power Steering Conditioner - 4 fl. oz. On Sale

Lubeguard 20404 Power Steering Fluid Supplement 4Oz. Bottle

Cheap Lubeguard 20404 Power Steering Fluid Supplement 4Oz. Bottle On Sale

Gunk M2734 Power Steering Fluid with Stop Leak - 1 Gallon

Cheap Gunk M2734 Power Steering Fluid with Stop Leak - 1 Gallon On Sale

Royal Purple 12326 Max EZ Power Steering Fluid - 12 oz., Pack of 12

Cheap Royal Purple 12326 Max EZ Power Steering Fluid - 12 oz., Pack of 12 On Sale

Lubegard - Power Steering Fluid Protectant, 4 oz. (20404)

Cheap Lubegard - Power Steering Fluid Protectant, 4 oz. (20404) On Sale

My new Mazda sedan would make a horrible moaning noise when I would turn the wheel all of the way. I added a bottle of Lubegard and after a week didn't think that it had worked. After two weeks I noticed that the noise had stopped. It's been 4 years now and the noise has not come back. If you're patient this stuff will work great.
If this stuff does not work you may have a mechanical problem.