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Re: Is aluminum anti-seize compatible with copper. [Re: Linctex] #5008425 02/11/19 10:51 PM
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MoreCowbellAz Offline OP
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Originally Posted by Linctex
Originally Posted by MoreCowbellAz
I always assumed copper core plugs needed anti-seize while Iridium didn't, but maybe that's a bad assumption.


The copper (or none) located in the center electrode has absolutely nothing to do with the price of tea in China.


I guess what I meant was it appeared to me that there was a general tendency that the makers of iridium plugs also put on anti-corrosive plating while a lot of those less expensive copper core plugs didn’t have that plating, presumably to bring the cost down. I thought perhaps the reason behind that was because one is a more modern design and one was more old-school, not because there was something inherant that says iridium needed to be matched with plated threads. Two separate things I understand, i’ve just never seen an anti-seize come on a plug from the manufacture except on a copper core. All of the iridium plugs I’ve seen have that plating and they say specifically to not use anti-seize. But I am no plug expert, just my casual observation.


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Re: Is aluminum anti-seize compatible with copper. [Re: MoreCowbellAz] #5008620 02/12/19 09:30 AM
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MoreCowbellAz Offline OP
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Well there you have it, according to Champion they don’t recommend using anti-seize Of any type, due to overuse in which case it messes up heat transfer as well as possibly contaminating the electrode. They go on to say if I do use some, use only a very small amount and start at least two threads up from the bottom. Even in that case, they don’t mention which type of anti-seize to use. So I guess to them any type or non at all.

As an aside On the champion website they have an article about removing difficult or stuck plugs, and even there they never mention using some type of anti-seize to avoid this in the future. They talk about using penetrants etc instead to loosen things up before removing.


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07 Toyota Prius Touring
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11 Kia Soul 2.0L (mine to maintain)
Re: Is aluminum anti-seize compatible with copper. [Re: MoreCowbellAz] #5013237 02/16/19 03:53 PM
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Snagglefoot Online Content
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Here is a photo of Permatex 133H Anti-seize. I have a lot of it left. I don’t think it's available any more but if you google it you’ll find it was a blend of aluminum, copper and graphite. In fact maybe that’s one you used? It looks like aluminum but actually has some copper in it, so I don’t think they are a problem to mix. Just my 2cents .

68CE2136-A316-47B7-A608-3791C93945EE.jpeg
Last edited by Snagglefoot; 02/16/19 03:55 PM.

If you want the job done right......do it yourself.
Re: Is aluminum anti-seize compatible with copper. [Re: MoreCowbellAz] #5013648 02/17/19 03:03 AM
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vw7674 Offline
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Yes, that's the perp right ^ there. 133H with the graphite.
Must be the ingredient that makes it want to carbon track,
Like others mentioned, avoid the first few threads, tiny portion
per plug (less than a sharpened lead of a No.2 pencil,)
& I would try to apply every OTHER time but that would require a log book. lol.
Don't get cute & use engine oil either, that can turn to molasses or cement-like carbon too. Becomes scary-tight.

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