2nd Gen R56 Cooper S Most liked posts in thread: R56 Coolant leak at Thermostat?

Zapski DON'T put any sealant in there. It will very likely gum up your heater core & possibly your rad. Carry a gallon of distilled water with you for you trip. Your MINI needs a new Jarvik 7 aka thermostat & housing. They all do sooner or later.

When you get the time Anson can do the heart transplant.

 

It is when you are spilling it on the street as you drive. Just hope that the temperature doesn't go to freezing, while you are waiting to repair it.

 

Zapski 50/50 is better, but water is OK too. If we get a big cold snap water might not be best. Anson will do a transfusion when he replaces the Jarvik 7 so don't worry about diluting the coolant.