The radiator in my car is damaged. One tube has a severe gash in it. I need to drive the car about 100 km before I can get a replacement radiator installed and coolant drains too fast to reasonably refill the cooling system every so often (with water of course, I'm not going to be leaking antifreeze all the way!)
Can I, e.g.
- rip out some of the cooling fins around the damaged tube and crimp it shut on both sides of the gash or
- fill the gash completely with a high-temperature sealant
in order to (hopefully) dramatically impede the loss of coolant?
Will doing one or both of these things only cause the radiator to lose efficiency due to no flow going through a single tube, or will completely blocking the flow of one tube stop all coolant from flowing through the system?
I imagine they are run in parallel and these are safe temporary fixes.