Hi All,
Well I've driven it around and the water is still clear-as is the oil.
I replaced the dickey waterpump, and upon taking off the rocker cover found it to be completely clogged with old dried oil, with the 3 ports from the breather tubes absolutely blocked and hard, and the device at the back designed to calm down the breather pipe to the sump rock solid.
I cleaned it as best as possile and the engine now seems a bit better-breathing a bit.
Looks like the top end was clogged and didn't let the engine breath.
My plan is to take off the rocker box today and soak it in a solution-unknown as yet -
to get all the dried oil out. The large breather pipe at the front is still clogged within the rocker box.
I suppose, with all the pressure on the two systems, oil particularly and the water of course, that it gave the impression of a head gasket fault.
Thanks again all and I'll keep all informed.
Any suggestions for a mixture to de clog the oil gratefully received.
I'm looking at thinners or something now and a metal bendable coat hanger or welding rod to get amongst it.