Archibald
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I put a new thermostat in my M1008 CUCV and cant get it to seal. I put gasket seal on both sides of the seal thumb tight; waited 1 hr.; torqued it to 30 psi and it dripped. Put seal in with out gasket sealant and it leaked worse. Bought new part the radiator hose attaches to; sealant on the radiator side of the gasket; torqued to 30 lbs.; still leaks. It leaks from the bottom of the seal. The radiator hose is tighten properly. Looked at the bolt holes on the engine and radiator side for cracks with a magnifying glass. Did not see any cracks. This should be a no-brainer; but. Any ideas?