I have a 67 C6 in my 65 country squire that has been resealed but still leaks fluid,it does not leak if its driven frequently but I have it in a garage I rent and is only driven a few times a year and it leaks a bit when it sits for months. I heard that the torque convertors leak the fluid back into the trans causing the fluid to come out the vent when sitting so is that true and if so I am thinking about putting a piece of hose on the vent and bringing it up on the firewall behind the motor so it wont leak out when sitting. Jeff