Changed the oil myself for the first time. The only PITA is the gianormous engine pan. I swear I am going to cut an access hole for the oil filter. Oddly there are some hatches on the thing, but wrong place.
Out: Subie dealer rattle swill and stock blue filter.
IN: 2010-2012 RX-8 Oil Filter
Amsoil EFM 5W-40 (Full SAPS Euro Perf Oil)
Dimple Magnetic Drain Plug
I wish I could say the engine was slightly quieter, but I can only say it's now almost SILENT. These engines seem to really like synthetic XW-40 (where X is 0 or 5). The Group 3 5W-30 energy conserving shearing oils are really just too low HTHS.