leaking antifreeze at thermostat housing.
 

Hi all. I recently replace my thermostat on my 1990 22re truck. Now it is leaking at the thermostat housing. I used the rubber O ring on the thermostat and tightened the bolts as tight as I am willing to do. Should I try some rtv instead of the O ring or make a gasket and discard the O ring altogether? Anyone else have this issue? Thanks in advance.
Deano

use the o-ring and water safe RTV.

Did you clean both surfaces real well as long as the neck where the hose goes.

I always use rtv and the grommet o ring and a new hose if it shows any signs of wear

This is after at least one or both bolts break off and need to be repaired.

Never seize is your friend:fire2:

Did you clean the area where the thermostat sits ? mine had a crust built up in the lip.