Radiator Stop Leak Additives
Reader Question
Hello I have a 1993 Mercury Topaz and its been leaking and thermostat has almost entered the red spot or hot spot, I did take it to a mechanic and he said it was the seals close to the water pump but it wasn’t the water pump.
He said it would cost about $260 to replace and I don’t have that kind of money at this time, I’ve tried , I know not wise , but old stop leak, i had for a year never opened, anyway, is there a temporary solution of a stop leak till my next payday, about a week Or the best brand of stop leak, thank you
Hello there
Those stop leak additives just don’t work very well on seals and rubber parts. They do seem to work a little for radiator leaks, but I don’t think you have an alternative…except stop often and refill with water so it does not over heat.
For a radiator “pin hole” sized leak I would recommend BARS Leak Stop additive you can buy from any auto parts store.
For a headgasket leak I would recommend K&W Engine Block Seal….more about that on my head gasket repair page.
Blessings,
Austin Davis
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