Sujit :
I believe what you've seen is anti-seize compound, which is typically
composed of either copper or nickel particles suspended in a grease base.
I use it on anything that gets hot (exhaust bolts/studs especially) or
tends to corrode, and on spark plugs no matter what kind of head.
IMO brand is not important. I've been using the same can of Fel-Pro
"On-n-Off" (which is copper based)for many years, but I don't think it is
still available. I believe any copper or nickel based anti-seize will work
fine. You should be able to find it at your local auto parts store.
At high temps, the grease boils off, leaving only the metal behind. ISTR
the copper is rated 750F, the nickel is rated 1100F. There are other
materials around, with different temp ratings, but copper is the most
common for automotive use.
Randall
sujit roy [SMTP:sujitroy@hotmail.com] wrote:
>
> I've seen people use a special type of grease that they use on spark
plugs
> when installing them into aluminium cylinder heads. This grease, I'm
> assuming prevents dissimilar metals causing a reaction. Is there a
> particular brand that I should use here in the states? Is it also a good
> idea to use it on bolts that go into the cylinder head?
> I'm also assuming this grease can with stand extreme temperatures.
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