[speeder]

The heater cores are not considered to be normally serviceable or replaceable items. And with proper maintenance, which means clean and correct coolant always, you would never have to get to the heater cores in 40 years. This car had dirty toilet water in the cooling system for a long time. It sat for years after the owner died.

I actually wish now that I hadn't journalised this here. I don't feel like talking about it and don't need advice. Too many better things going on.