Removed another 100 ml of oil so now the level is within 3/16" of the fill line. Discovered that oil was leaking around the tank lid. Removed the lid, cleaned the oil and seated it well.
Did more taxi testing. Was unable to get the oil temp high enough to do a high RPM brake test or fast taxi. Was able to do some conditioning of the brakes per the brake manual. No oil leaking at the tank lid.