
So what the hell is it, anyone know?? And more importantly, do I need it?!?
I just started having a strange knocking noise that happened occasionally which sounded like something rubbing or catching, could this be responsible?
It's a rigid pipe, looks like it's had liquid in it.
[img:600:399]http://www.dav-t.co.uk/pipe.jpg[/img]
[img:600:399]http://www.dav-t.co.uk/pipe2.jpg[/img]