another oil problem.... help

[bignasty250]

ok about a year ago i blew a high pressure oil line, i got 2 brand new lines and had them installed, about a month ago my oil pressure gauge started screwing up, it would read regular oil pressure when i started it and stay regular for about a minute then drop to nothing and would show reg. oil pressure every 5 to 10 minutes of driving. i figured it was just the sending unit but the other day i was driving i started hearing the belt squeal so i stopped and when i got out there was a good 2-4 quarts of oil on the ground, i tried to find it but i couldnt exactly pin point it but i came to figure it was most likely the hpop o-rings on the lines. my question to yall is did my oil pressure gauge have anything to do with this and also can i get the o rings at a regular auto parts store? if so what do i ask for? and one more how can i pinpoint the leak?(there is oil in the front part of the valley below the hpop)

[NCHornet]

There are a few different places it could be coming from. You need to get some degreaser in there and get it clean as possible. Use a high pressure garden hose, not the one from the car wash, cover the alt and PS fluid cap, get everything clean and then fire it up, that big of a oil leak should be easy to find. I would get the O rings from Ford.