I installed my 190/100's this last week and my mtw stage 3 and I have an oil leak under the turbo area. I pulled the turbo and the orings looked ok on the drain tube, but I had another sitting around so I swapped the orings and it still leaked. And since I didn't have the leak before all of this I decided to put my powermax back on and it leaked also. Now what confuses me is that at an idle it doesn't leak a drop its only while driving which makes finding the source even harder. Everywhere around the valve covers that I can see and injector connectors looks clean. I cleaned the pedestal and drain tube off and went and drove it and there was some oil on them when i got back so i think it has to be the drain tube so I ordered a whole new one from my local ford dealer and it won't be here till Friday I just wanted to get some opinions if it is the drain tube or if I could have another issue. The truck starts just as fast as before once the air got worked out and it runs good.