Well I took the intercooler off and cleaned it with a 50/50 mix of diesel and petrol on a paint brush and blew it dry with the compressor. Inside is spic but the source of the oil appears to be coming from around the injectors so am doing more homework. Cleaned up the top of the block while it was exposed and will keep you posted with what I learn. Open to suggestions too...

Have ordered the ProVent 200 catch can and if we leave the job to the next workshop I shall invest in the valves and gauges and make the project worth our effort.

And Roofy, me thinks that object under the bonnet of your new rig that we couldn't identify at Neurum Creek - may be the catch can... what say you?

Thanks heaps guys.