Removed the turbo oil supply hard line. No visible cracks in the line. I replaced it with the flexible, braided hose kit from P&L. No more leaks/burning oil. I'm assuming it was a leak the banjo fitting connection to the block.
Stainless Steel AVCS Line Kit - P&L MotorsportsP&L MotorsportsLink to the oil line kit you bought? Been thinking about doing this.
Once I got everything broken down better and got a better mirror, I could clearly see an oil stain from where oil had been leaking down from the turbo oil supply line connection to the back of the block. But I've been thinking about the valve cover gaskets too.I would check the valve cover gaskets. With 170k miles, if they have not been replaced, then they need it. My passenger side was leaking and it would smoke some out of the scoop and hood. Clean the whole area real good then go for a drive and see. The issue with some oil leaks like that is a little bit of oil will make it look like a huge leak. The best way to check the bottom of the valve cover is through the access door behind the passenger wheel where the O2 sensor is.
Thanks, I'll have to inspect that. I don't think I've had any oil anywhere above roughly the middle of the block, but I'll be sure to keep an eye on it.Have you checked the oil pressure switch? I had a long-term intermittent oil leak like yours that I couldn't track down until the switch started spewing oil everywhere and it became obvious where it was coming from. If there's any oil on the top of the engine this is possibly your problem - an easy fix. There's a history with oil leaks on failing oil pressure sensors in Subaru's.