M Kerr wrote on 09. May 2011 at 11:13:
Thanks Mike, the oil's fine but probably due a change soon. Hopefully it is something in the region of the plenum pipes but can't be sure yet. I know that somewhere on the back of the block is a breather pipe the is a bit prone to crudding up and increase the the crank case oil pressure. I wonder if its anything to do with this?
Thanks again
That could possibly be the one i have in mind

,
And yeah it could well be that anything to do with crankcase pressure causes havoc! and damage in long term

keep us updated

michael