I might have missed the thread. I'll look around. I posted up info. on the oil change but I only listed the size of the socket needed... Maybe somebody else posted up thread size and pitch.... The cooler drain is an accident waiting to happen. The drain is in the aluminum line with nothing supporting it... Thanks. I'll go search.The size and thread pitch is in one of these threads about oil changes.. I just read it this weekend. Cooler and pan sizes were listed by someone.. Im just too lazy to look for it right now.