havent looked into it really.. I have a forester for the winter that I happened to be driving to prep for the winter, so its just been sitting.. Chances are its bearing noise- or maybe too much play in wrist pins.. Havent gotten into it at all. This cars been through 2 turbos since I got it- chances are theres been some metal through it.. Even tho when the 2nd went it was out or warranty and I did it- I removed oil pan-oil cooler and everything, but you never really know till you open it up.. I am convinced that this engine has had every major or minor thing wrong with it that these get.
Ringlands are going- verified with scope
Im guessing valves are too tight- have that misfire everyone searches for then does head job
Turbo(s)- I can verify the banjo bolt was nasty when I replaced the last one- suprised Subaru even put a filtered one back in there after the first one
Oil pick-up- verified had small crack in it when I removed oil pan- swapped it at that time