Ok so i have a S4 Infini. Temp gauge got upto 3/4 and when i got home, was steam coming out from under the hood. The flange type thing at the top hose where the cap goes on is fucked and lets out coolant.

My question is... Would my coolant seals be fucked now? I know how to do the test, but i'm not touching it till i fix the problem now. The engine was rebuilt under 30k km ago so i hope not....

 

You can't know till you check em..