Sorry to resurrect such an old tread.

I was adding some manual transmission gear oil to my 2007 Chevy Aveo5 through the breather tube hole. I got the breather tube cap off ok, but when I went to put the cap back on, the cap snapped in half.

Where can I get another replacement cap? I have looked online some. My last ditch effort is the junkyard...but would like to have a new breather cap.

Quote Originally Posted by Nickelbawker View Post
Just changed mine
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Wasn't sure if I had the same filler bolt as OP so here's some pictures.

Feels better, first gear is way easier. I think I was way under by at least half a quart($500 Aveo life). Shifts feel smoother like the Royal Purple claims.

There's a PDF floating around that says what fluid they use and it says Syncromesh fluid for certain years of the same transmission that has the weight listed but it also says Syncromesh after that. I went with Royal Purple($16ea at orielly's) because it felt thicker like it would offer more protection than the Syncromesh Valvoline that was only about $10ea.

I left my gasket up there on the trans as well and de greased both then cross pattern torqued it back down lightly.