Still need help with this, after replacing a pipe and losing 99% of my PS fluid I fill it up now but after about 2 miles the light comes on and its leaking out of the reservouir, why is it doing this? do you need to bleed it or am i doing something wrong?

leaking out of the reservouir

 

Out of the cap?

 

Yes you do bleed it,fill up to the mark run the engine and turn steering wheel left/right until all the air is out.

You can see the air bubbles escaping up through the reservoir.