sealing frost plugs

[68gtx]

what are you guys putting on your frost plugs to seal them up when repacing?

 

[fanofpetty]

#2 black permatex. This is what they taught us in automotive technical school back in the seventies. It's all I'v ever used and never a leak.

 

[RedFish]

#2 black permatex

Same here. There are very few places where I still use the hard setting permatex.

 

[The Shocker]

I have installed them dry on many engines over the years ,and they didnt leak ...

 

[jimjimjimmy]

if every thing is clean you should need nufin

 

[mopardude318]

My pop's always used red lock tite. Ive followed in his shoes, with no problems or leaks...always worked for us.

 

[nothingbutdarts]

My story is, I use orange silicone. Never had a leak either.