Well, it's in the garage. The tame mechanic called to say the cooling system was contaminated. Someone has put something in the system that he thinks has gunked everything up. A white gunk is blocking the cooling system. He's going to remove the rad and flush it and flush the system. Sounds possible i guess but why would someone do this? Normally to try to cure a rad leak or head gasket leak maybe. I hope it's not just my wallet being flushed!! Ok, seems sorted! The mechanic said the coolant was contaminated and now it's been flushed all works ok. The temp comes up to 90 then back a touch and hovers, all good. Heaters now work as they should too. The only thing that needs sorting is the expansion bottle cap. It's leaking a little so i need to get that sorted asap. Frauds want