Should I replace my power steering pump, since it's leaking, but can't find leak on 1992 Lexus LS400

It's going through a lot of power steering, but it's not leaking on the ground and I can't find the leak.

Asked by for the 1992 Lexus LS400
I wouldn't throw parts at it. It may be leaking at the rack and pinion and the dust boots may be holding the fluid in. A good repair shop can add dye and find the leak with an ultraviolet light. Good luck.