hello everyone. i was in the middle of doing a glow plug upgrade, i removed the fuel pump oil cap to get a better shot at one of the plugs and noticed it was low. i decided to fill it up a bit when i put the cap back on. to my surprise the oil i just poured into the pump was draining out the bottom of the car. i cant find much info on this pump so any info would be awesome. i hear there a weep plug? could this be where the oil is leaking from? also it seems to be pretty heavily mixed with fuel? please someone shed some light on my situation.

the car runs very well so i would be surprised if something was seriously wrong with the pump but id rather nip it in the bud than let it turn into something tragic.

 

Please, someone out there has to have information on this pump, any info would be much appreciated.
Thanks,