[brit01]

AR manual says to use anti-seize on the spark plugs.

How many of us do this?

I have never done this - just made sure the threads are very clean and not overtorqued.

What kind would be best? High temp rating for aluminium heads? Loctite?

If it is not high temp rated it can harden no?

 

[Pasi]

Never done it nor heard anyone I know do it....

 

[sudboy1490]

i use a smidgen of copper slip...

 

[kammatic]

as sudboy says, tiny smear of copper slip on the threads only, then tighten to correct setting. DO NOT over tighten plugs.....

 

[brit01]

copper slip

copper slip? slip as in paste? Never heard of this.

If so I had the copper paste/grease can harden under high temps no?

Maybe wrong. Please correct me.

 

[sudboy1490]

copper slip/grease is the same thing brit, its good quality stuff, i'v never heard of it hardening at engine temperatures!

 

[markp2]

Copaslip is the trade name for a brand of anti-sieze grease in the UK. It has lots of microscopic copper particles in it and is copper coloured. it has been around since the 1930s - you may well have a similar product available locally
I use it on spark plugs and many other places as well.
Cheers,
Mark

 

[brit01]

Thanks guys.

something like this? will be cheap to post to Uruguay (just 100g).

http://www.ebay.co.uk/itm/Molyslip-Copaslip-100gram-Tube-Free-Postage-/310338847197?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4841a301dd

 

[markp2]

That's the stuff.
Mark

 

[zulu ferret]

What sudboy said. I've always used a bit of copper slip more recently, although in the 'old days' graphite was recommended on the threads. Never had a problem but beware if those twinnies' are left for 60k as I personally think that might produce a problem? Baked in fest?

 

[brit01]

but beware if those twinnies' are left for 60k

I regularly change my plugs as NGK are cheap :thumbs:

But looking around for a 100g tube of copaslip now.

Thanks guys.

 

[zulu ferret]

:thumbs: right track thinking imo.:

 

[simonsud]

hi I'am a mechanic and always use a alluminium grease same as cooper slip but has hgher melting point.

 

[Alfafamily]

Steel spark plugs , aluminium head... why would you want to add copper particles to the mix?What simonsud uses makes more sense I use high melting point grease with no problems. In reality I don't think it matters what you use on plugs.

 

[zulu ferret]

Copper-1050 'c mp. Aluminium-625'c.mp. Copper slip/copper ease both ideal products as an ant-seize medium. HMP grease has been superseded by : as above? :

 

[brit01]

Copper-1050 'c mp. Aluminium-625'c.mp.

Interesting.

If Copper has a higher melting point then copaslip would be better for spark plugs.

But thinking about it logically aluminium grease would also be fine as the temp. would never reach 625 otherwise the head would melt along with the anti-seize grease!!

 

[Alfafamily]

Interesting.

If Copper has a higher melting point then surely copaslip would be better for spark plugs.

The melting points are pretty irrelevant really given the relatively low temps that engines run at.

 

[brit01]

Yes I guess I should have added that after my second sentence:

But thinking about it logically aluminium grease would also be fine as the temp. would never reach 625 otherwise the head would melt along with the anti-seize grease!!

:thumbs:

 

[zulu ferret]

I'm not a mechanic I'm just a right old has been? But dad always stressed try to get your facts. right? Imagine the aluminium?? ( ) lubricant fusing itself to the aluminium threads> Well I never did, blow me down and I'll go home? :lol:

 

[zulu ferret]

Someone always attempts to market a supposed better product, and of course aluminium particulates would not melt unless those threads went above it's mp in temperature? I was being tongue in cheek you know what??