Power Steering Fluid Leaking ONLY in warm weather

Where is it leaking eaxactly? Usually anything that leaks only when warm would cause an expansion of seals or o-rings resulting in the leak stopping or slowing down. But sometimes it's the other way around. It could be a bad seal on the steering rack, bad seal or o-ring on the pump , bad teflon seal on one of the lines or even a bad hose or loose hose clamp on the low pressure line. If you are having to add THAT much fluid constantly, It may require an actual repair or part replacement. I'm not too keen on those stop-leak additives but you can give it a shot. It just depends on where it's leaking. Leaks in the pump or steering rack can sometimes be fixed with a stop-leak additive, however, leaks in any of the teflon seals in the lines will NEED to have the seals replaced. Teflon seals can't be repaired with an additive, because the teflon is like a hard stretchy plastic. Plastics are mostly non-pourous and wont absorb fluids well.