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Looks like it's an impending bearing failure for me. Check out another thread I just started, Improving Forged Engine Longevity w. Coolant Pre-heaters (i.e. Webasto, Eberspächer).

As detailed in another UOA I posted, it looks like I will be looking for a new shortblock for my turbocharged '05 Subaru Legacy GT soon. I began by only considering OEM replacement options because I wanted a long-lasting engine; that is before I discovered engine coolant pre-heaters. While I'm...

No fuel additives or ethanol. In post #13 I mentioned a dirty MAF which might be causing higher than normal fuel levels in the oil. I've since taken care of that. I've attached an old UOA which shows flashpoint at 370f and 0.8% fuel. Will 3.5% fuel make that big a difference in wear? Thanks for...

Ah, thank you. The car was throwing a P0172 (rich) code when I sent in the analysis. I looked into this and found the MAF was very dirty. I've since cleaned it up and the code has not returned.

Tuning Alliance based in Connecticut, they dyno tuned the car back in 2015 immediately after I drove her from CA back to NY. I should hasten to add that this car has seen a few track days so it's likely I was just expecting too much out of this engine. Old dyno sheet attached for your enjoyment.

I've never heard "drowning" used that way before, care to elaborate?

Oil pressure at startup idle is 95psi and goes down to 30psi once oil reaches 175f. At 5k rpm and 175f the pressure reaches 95psi. Yes, it is the original. I was hoping with my reliability mods this one could have lasted longer, but I did let the oil get low once and taken it to a few track...

2005 Subaru Legacy GT. It has a VF52 with supporting mods and tune, also an aftermarket oil pick up tube (stock is known to crack), oil baffle, and oil pan. The stock block is generally known to handle up to 350whp. My car makes 290whp/330wtq. The banjo filters supplying oil to the turbo have...

Hello folks, Looking for additional insight on what might be happening here. So far I've observed no glitter in the oil, noises, or low oil pressure light. According to Blackstone's recommendations these are things I should be looking for based on high iron readings. The oil was run below the...