"Most people who drive cars now couldn’t find the radiator cap if they were paid to, and that’s fine."
That's not fine IMO. That is a basic bit of knowledge about a car and if you don't know where the radiator cap is you will eventually have to pay through the nose to someone who does know (and possibly be stranded somewhere). Knowing how to check and fill coolant isn't like knowing how to rebuild a transmission. It's very simple and anyone can understand it in 5 minutes if they only have the curiosity.
That's not fine IMO. That is a basic bit of knowledge about a car and if you don't know where the radiator cap is you will eventually have to pay through the nose to someone who does know (and possibly be stranded somewhere). Knowing how to check and fill coolant isn't like knowing how to rebuild a transmission. It's very simple and anyone can understand it in 5 minutes if they only have the curiosity.