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Hey all, sorry to bump this mega-old thread, but it was the first one that came up in a search.
I just did a thermostat+housing replacement. I used RTV silicone, let it set for 30 minutes, refilled the reservoir and checked for leaks. Let the RTV continue to set overnight, then burped the radiator and let it come up to temp. Everything seemed great. I drove the 15 miles to work with no issues. After work, I got about 4 or 5 miles when I started overheating again. Pulled over and looked under the hood. I was gushing coolant from the bottom of the thermo housing. I got the car towed back home. Has anyone else had issues with RTV not sealing correctly?
Now, my second question: I decided not to gamble with silicone again and went and got a gasket for $2 at AutoZone. I pulled the housing off, cleaned all the surfaces of silicone, and reinstalled with the gasket. Except I seem to have stripped the threads on my brand new housing, and now there's a small drip of coolant from under the bolt hole whose threading stripped. Would it be safe to use Loctite or another comparable thread repair compound or should I just buy another new housing?