89 DeVille Power Steering issue
 

So I have an ‘89 DeVille, in the past 3 months I’ve had to top off my power steering fluid about every 2 weeks (I don’t drive much), I’ve taken to a buddy to have him look at it, he says the pump is fine and not leaking. He mentioned the leak maybe further down the line and to keep an eye on it. So I have periodically gotten under the car and looked for signs of a leak, can’t find a dang thing! No puddles under the car, no wetness anywhere under the hood… I’m totally baffled. Anybody ever have an issue like this? Were you able to figure out where the fluid loss was coming from and fix it? The car runs beautifully other than this issue and only has 70k miles on it. Any advice is appreciated. Thanks!