I would move up to a major brand Xw40 (Amsoil contains a lot of detergents, so it is good for extended OCI's) and add half a can of Liqui Moly Motor Oil Saver every oil change.
If the CCV is OK and it's not dripping or blowing smoke, the most likely cause of high oil consumption is worn valve guide oil seals. Using thicker oil and a major brand stop leak additive should help with the seals issue, BUT it will make no difference if the rings are bad.
Impressive UOA with no sign that the oil needs changing, although that might be partly due to the amount of top up oil.