Thermostat housing

If there are smooth sufaces, no sealant is needed, however, most people use a small amont of silicone. I prefer to use Gaska-cinch, as it is like rubber cement and peels off easily next time.

I just replaced mine a couple of weeks ago. I didnt use any sealant at all.

DANFXR did pass the time by typing:

My experience has been use gasket sealer and get a leak. However a real thin skin of Permatex Hylomar HPF (and I mean thin as in wiped on with your finger thin) could be used. Suggest you try it dry first then go back and use a sealer if it has any leaks.

Depends on how clean/pitted the surfaces are. I replaced mine in my Waggy a month ago where the surfaces were a bit pitted and it leaked big time - blue hermatite sealant (non hardening) fixed it.

"Pitted" would be a kind description of the one on my '88 when I changed the thermostat last summer. That sucker took several minutes on the belt sander just to have a prayer of being useful.

Pers> Depends on how clean/pitted the surfaces are. I replaced mine in my Waggy a

Ditto ! Dave