Craig

Thanks for the tips on the pressure sensor I have used Air Power Products before so I will give them a call today.
What is the min/max readings of your gauge?
Does the gauge have to be heat resistant or will a normal gauge be sufficiant?
How did you get on with the course in wakefield?

Lee

Could the oil substance be water from combustion mixed with a load of carbon from the exhaust system?

I don't mean to stay glued to the turbo been at fault but it may be worth checking the oil pressure, return flow of oil from the turbo and also the crankcase pressure as I feel these could also contribute to oil getting past the turbo seals of a turbo with no end float.

hth
I will keep thinking

James