I believe we're attempting a somewhat comprehensive TOD thread for noisy HLA's in EA82 and ER27 (XT6) engines.   ***Simply put, I would replace the oil pump if you have TOD.  Details: I've solved every case of TOD with a brand new oil pump (once I figured it out, after years of monkeying with other things that were temporary or had varying results).  themoneypit (member here), Austin (forum administrator of www.subaruxt.com), and others have had the same experience - new pump solved the i