If the Subaru spec permits over three quarts of additional oil per 6000 mile oil changes as normal, geez then why change your oil. Its getting to the point that all you need to change is the filter. (sarcasm). And to the above comment, my service manager told me if my car fails its next oil consumption test Subaru will replace the entire short block, not just the rings. As to some comments about driving styles causing excessive oil use, our car is driven non abusively, no mountains, no jack rabbit starts, and one passenger. As to oil type, all changes were done at the dealer. Does anyone know if all dealers use the same type of oil?