apply permatex to clean thermostat housing. place housing on clean block,in place, to set permatex. pull apart for 5-10 minutes to allow it to set up, install.

but i prefer the gasket, so as next time there is no silicon to scrap off.

order 2 or 3 while your at it.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.