No it's not. It was when the supercharger gasket was leaking but not since I had that replaced. I pulled the rings on the passenger side and put new ones in. It seems like the problem is mostly fixed, only time will tell though. I could not replace the ones on the driver side since I am at school and don't have access to the necessary tools to remove the supercharger and my throttle body. I don't want to pay an *** load for labor at a shop when it's a simple job to do. Hopefully the bad ring was in the rail that I pulled.