the pcv has an orifice,small and cant really suck much, at all, stock.
but one guy here had Lincoln PCV off huge V8. causing odd things....
copper coat slippery , to prevent head gaskets from sticking and ripping apart, with thermal expansion? and to fill in head gasket to block inperfections.
its for heads, and mostly old cast iron types. never alum. (what the new can spray, by Permatex does, ive no clues)
most gaskets need nothing, in fact many have the sealants "built into the gasket" today, using other sealants can interfere with that.
id use RTV only and only if needed.
there are after market pure neoprene gaskets to buy, but are long wait in the mail.and $$$$
id not ever use coppercoat today, i have some but it sits there.
the usage was for heads, but today's heads and gaskets, are setup for fast large aluminum expansion, using special gaskets. id never use it for this now.
try a new dry gasket, leave the gasket do its thing.
it failed in a short time. so what ever it is, is wrong.
id say, it would go 60k miles no problem.
the msds shows, ETHYL ACETATE and cooper and piles of solvents.
not sure with the acetate does to cork, (composites) might be bad .
the copper alone, after its fully dry, would act as micro ball bearings, i think.
i also use this , for contact gaskets.
Hylomar (aka. Locktite 819.)
one great usage is holding up the water pump gasket , as you put it on,
finding some is hard, most stores only sell permetex products, on the shelf.
i do not like RTV, i try to avoid it.
it can get inside the engine easy, and can be sucked in to the oil pump screen.
ive seen it in bearing caps. (oil slots)
once heard , you have to scrape it all off. hard work and can get in the engine easy.
that 819, you can get the gasket off later and it dont stick there.
when permatex bought loctite out. they ended, the 819, sadly
but it is sold by one company still.
http://www.grainger.com/product/HYLOMAR-...3P427_AS01?$smthumb$
also Threebond makes good products like this.
the suzuki transmission is glued together with it. (as are Catapiller casings)
and productes like the Hylomar.
sealants are a complex topic,
