I saw a comment on Facebook, seemingly backed up by a few other people, that it was perfectly fine to keep riding a liquid cooled boxer after total loss of coolant through a punctured radiator. One guy even claimed he rode 500 miles at highway speeds and his engine was fine. (His engine temperature never got above something like 160F!) This doesn’t sound right to me. I picture the insides of this guy’s engine glowing red hot while the engine temperature pickup sits in an air pocket without engine coolant washing over it. What is the reality? What if you did lose all coolant 50 miles up a snowmobile trail in Quebec? Would you even be able to limp back to civilization in first gear barely off idle without doing damage to the engine?