Thanks for the tips.

I didn't know that it rarely drips with the engine off, but I suppose it makes sense as no pressure on the system.

It sounds like using ATF is too risky and might be tricky to get out of the system afterward.

I just found 2l febi ZH-M for $40CAD online (I think I need 4l total). I'll give that a try. Hopefully I can find the leak without wasting it.

Can I empty out the system by catching the liquid on the return line at the tank? Or do I risk running into issues by running the pump dry? (I could stop before the tank is empty)