My main leak issue was coming from the oil feed line connector. I replaced everything and it still leaked out of the center section of the turbo, where the right angle fitting screwed in. The hole had warped, so I had to run a pipe tap in the hole to get it round again. Well, it was still leaking out of another area of that fitting, so I switch to a compression style fitting. That worked for awhile and started leaking again. I had so many issues that I gave up and ended sweat soldering the fittings together. Hasnt leaked since. I know I may have gotten some solder int he turbo, but at that point I was so frustrated I didnt care anymore. Evereything turned out fine.