Thread: Thermostat question

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i allways hit them on the belt sander or a file till dead flat. i use old number 2 as well even the chrome ones with O ring first take out O ring put back in coat with number 2. to say i never had one leak would be a lie... but after i do this 99 of the time it works. less its mine then the stock one on my chevy was still leaking ended up with a poor gasket .pick up a better gasket and that end of the leak

I've never had a problem with one, but I always use a little silicone around the edge just for insurance.