When I assembled my motor I used some thread sealer that I had in my toolbox from a previous project, and frankly it didn't work. I'm running Evans NPG+, which makes it more inclined to leak anyway, and boy it does! Currently it is leaking from about 1/3 of the head studs, two of the waterpump bolts, and from the thermostat housing. I can only imagine how bad it would be if I had put a pressurized radiator cap on it.
My winter project this year is to pull the head and intake manifold off and get them polished, and I'd sure like to clean up all of the bolts and studs and seal them up for good when I reassemble it.
So, what the the consensus of the best thread sealer to use?
Marty