Bubbling Rotrex Supercharger oil

  1. #1
    After splitting a hose and spilling £100 worth of oil I've repaired the hose and filled up with some more oil (from GMC so I know it's kosha)

    Now the oil bubbles from the fill line to the top of the reservoir, I have run it several times in the hope it's just air coming through from the system.

    Has anyone else experienced this?

    It was left standing for a few weeks so is it possible that it's water in the oil from condensation?

    Any help if much appreciated.
  2. #2
    could you try bleeding the system?

    and would a new hose have been a better option than a repairing it?