I was noticing my manual transmission on my 1989 240sx was leaking the other day so I pulled it and noticed there was a hole in the top like there was something missing. After researching online I found a pic that had what looked like a yellow plug in it. I was wondering what it was and what I can do to repair it?? I was also wondering why it would have came out??? Thanks
http://i82.photobucket.com/alb...1.jpg
