Had a major oil leak in my 86 GT. 2-3 qts. every 2-3 days.
This is my son's daily driver (for now) without it my wife has to get him to and from school.
I looked under towards the starter, around the oil pan and on and on. I even at one point thought it was the transmission fluid coming out. So I changed the trans fluid and filter. It didn't hurt but didn't help either.
Then did a search here and found this http://www.fiero.nl/forum/Forum2/HTML/124595.html
I took a look at the bottom of the dist where it meets the block. Just a small amount of oil so, like a idiot, I ignored it......A week or so later still looking and almost ready to bring it to the mechanic i popped the hood while it was running and the "little" pool was now a "lake". Parts store and a new o-ring. Unfortunately work is so busy right now it took another week and 6 more qts. of oil before I got to it. Very glad I did get to it though. The oil leak has stopped annnndddd it doesn't run as rough now that I have all the plug wires connected in the correct order on the dist. The guy I got it from messed a couple of them up.....and now it pures and doesn't pee oil.
Thank you phonedawgz and others.