if threads are clean,
white Loctite Thread Sealant - there's two, both will work dandy in any
automotive threads.
one is extra high heat, for cyl head fittings or exhaust bolts, but
other is better for later on taking stuff apart if not super hot location.
(and not the one with teflon)
doesn't actually fully lock it.

"Ignoramus31279" wrote in message
...
I am installing a bunch of 1/8" NPT fittings into an engine (26 year
old Onan DJE generator). I would like to make sure that no matter
what, the engine oil sealed off by the fittings, does not spill.

Should I use teflon tape (which is a hassle), or is there some nice
compound that I can put on threads?

thanks

i