Coolant Overflow Tank Repair Question???

Question

I have a crack in my coolant overflow tank on my 1996 mitsubishi eclipse. I know that I should replace the tank itself but need a temporary fix. I bought a plastic welding compound that is rated up to 200 F. Should this be sufficient to hold the hot coolant overflowing from the radiator.

I also realized that the coolant in the tank was boiling. I am not sure if there was some air trapped in the radiator or not. I opened up the pressure cap and refilled it with coolant...waiting...and topping it off as the water went down. I then plan to refill the overflow tank and pray that it is still not boiling.

Overall with those temperatures should I be safe with the epoxy. It dried hard and bonded to the plastic well. My only concern is for the temperature.

Answer 1

I once tried J.B.WELD on my Intrepid which had a crack on the top/left portion of the plastic.Permanent fix.One other suggestion.You may want to check the thermostat.A bad one could cause it to overheat.

Answer 2

Change the thermstat and flush the engine while your at it.