rack end seals are worn/going hard.
You can get a product from lucas (in a white bottle about $15) that stops leaks.
However not sure if this is great for pumps etc. Put it in my gfs car, still leaking a bit from rack but better. The level doesnt go down much but there is wetness around the boot. The boot is split so it comes out. If the boot was in better condition it would probably just build up in there for a while.