Tombraider,
I do not doubt your knowledge at all and it was a bit of a surprise to find that oil had actually gotten past them. I am thinking that maybe as the unit is not held down with anything other than the o rings holding it in place that there may be some movement / vibration over time wearing a small portion of the or ing away. When I pulled them out they did not look deformed or severely worn at all, but when I put them up against the new unit, they were ever so slightly worn / smaller. You could hardly notice until you laid them on top off each other. I would not silicone where the orings are. Was just thinking about sealing the top section where the plug meets the head, about 3/4 - 1 " above the o ring location. You would think with two o rings it would be just about fool proof.
Who would supplu the Viton O rings so I can get some spares.
Cheers
Craig
