Well you see this thing with Japaneese writting on - its from my Eunos. I've replaced it with a new one.
With any luck the sealing rings are tired. Anyway spashed a drop of antifreeze in it too ready for that cool spot in the weather thats soon going to be here. Hence I went for Antifreeze that will go down to -60! Erm gobal warming does odd things, be ready, be prepared.