Cheers lads, had head tested and was all good checked the block and seemed fine cleaned and reassembled everything bypassed the oil cooler flushed engine and topped up everything and it'd still mixing oil and water badly so now I'm thinking the block is buggered.

Also it's missing badly now, I removed the brand new 071c plugs and 12 and 4 are spot on but 3 is a rusty brown colour