Sup
I've been running the Zionsville Aluminum expansion tank with a SPAL fan on my S50, and my Ti doesn't have anything to plug into the 6 cyl level sensor. It's just sitting in the tank as a place holder to plug it, but it keeps leaking slowly over time my sealant isn't holding up :-/
So I'm going to have it welded it and sealed off, it's this hole on the right with the threads, it serves no purpose on the Ti chassis