Yer all of topic here. The question was "has he been done?" which hardly rates a reply. A rad can split just because it was badly made. How has it suddenly become a head gasket job?
Don't simply treat the symptoms 'cos you'll spend the rest of your life working for the NHS with a free holiday from whoever supplies what you prescribed most ( alledgedly )
Start with the basics: was it overheating to start with; was it losing water, is their mayonnaise on the end of his dipstick, does he get a hot shower when he opens the rad cap? The idea is to diagnose the problem.
Pompous, I'll get me coat, sorry.
If you need something done quickly just ask a busy woman then get the f"k out of her way.