I can Confirm that the filter cover is a 15/16 "Bolt", since that is what fits the best on mine; the Drain Plug is also a T-45 Torx Bit.
Thanks 2010AveoLT. You are correct. A 15/16 socket fits the oil filter bolt. All I need now is a day without snowfall.
2010AveoLT (02-23-2015)