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Author Topic: Spark plug anti-seize compound  (Read 1432 times)

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Aussie

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Spark plug anti-seize compound
« on: July 09, 2019, 08:51:29 PM »

On installation of spark plugs service manual states to use Silver Grade anti-seize which I have been using for several years but not the HD branded one.
6. Apply a light coat of SILVER GRADE ANTI-SEIZE (Part
No. 98960-97) to the spark plug threads. Install and tighten
to 12-18 ft-lbs (16.3-24.4 Nm).


What I am using is the Anti-Seize 37617 also in a Silver Grade.
Typical Applications: For easy removal of spark
plugs, cylinder head and exhaust head bolts.


There is also another Anti-Seize 37616 in a Copper Grade.
Typical Applications: Spark plug threads installed
in aluminum, exhaust manifold bolts, engine bolts,
thermostat housing bolts, oxygen sensors, battery
cable connections.


Do you see an advantage in using the Copper grade over the Silver Grade, I am thinking of conductivity between spark plugs and cylinder head threads.
Both are suitable for spark plugs except the copper is for spark plugs screwed into aluminum.
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2002FXDWG3

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Re: Spark plug anti-seize compound
« Reply #1 on: July 09, 2019, 09:40:29 PM »

I always use a small dab of the silver (not HD re-branded) anti-seize on all plugs and never once had an issue.  And I've changed a heck of a lot of spark plugs over the past few decades.
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grc

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Re: Spark plug anti-seize compound
« Reply #2 on: July 10, 2019, 09:02:31 AM »


Either type will work well on spark plug threads, copper has a higher max temp range but I've never had a problem when using the silver variety.  As for conductivity, not a problem either way.  Don't forget, it's kind of like the old Brylcreem commercials from the dark ages of my youth, a little dab will do ya.  I've seen some folks create problems when they assume if a little bit is good, a lot must be better. ;)

Jerry

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2002FXDWG3

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Re: Spark plug anti-seize compound
« Reply #3 on: July 10, 2019, 09:25:13 AM »

I typically use the copper stuff where (environmental) corrosion is a concern, like suspension bolts.
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dayne66

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Re: Spark plug anti-seize compound
« Reply #4 on: July 10, 2019, 10:39:59 AM »

I have heard not to use copper......if any gets 'inside' and combusts, the O2 sensors will be fouled. But...if you use very little it should not be a problem either way.
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rayson56

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Re: Spark plug anti-seize compound
« Reply #5 on: July 10, 2019, 12:28:39 PM »

Either type will work well on spark plug threads, copper has a higher max temp range but I've never had a problem when using the silver variety.  As for conductivity, not a problem either way.  Don't forget, it's kind of like the old Brylcreem commercials from the dark ages of my youth, a little dab will do ya.  I've seen some folks create problems when they assume if a little bit is good, a lot must be better. ;)

Jerry


Well said as usual Jerry, and I remember those commercials.
I've always used the copper and almost all the tech's at the dealership I work at do as well.
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longlast

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Re: Spark plug anti-seize compound
« Reply #6 on: July 19, 2019, 07:13:37 PM »

I've used copper for years on all fasteners as well as plugs also on the brake disc pads and the threads of the pad keep pins.  It works good on the exhaust joints as said it handles the heat. It's a compound that only requires a small/ thin amount not to be confused as a grease.
Never have had any issues using copper and plugs are number one on the list of it use.
« Last Edit: July 19, 2019, 07:18:12 PM by longlast »
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Smoketown

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Re: Spark plug anti-seize compound
« Reply #7 on: July 20, 2019, 10:40:15 AM »

Copper is copper ... But, there are TWO silvers.

One uses aluminum powder ... The cheap stuff.

The more expensive kind uses nickel powder.

Because so little of it is used, there is no reason not to buy the 'good stuff'.

Think about it ... If the heads are aluminum, why would you use an aluminum-based anti-seize?

Back when Google was new, I searched 'anti-seize' and have since been using copper or nickel exclusively. (I've been using up the 'cheap stuff' on auto lug-nuts and the like.)

Side note - The more expensive compounds typically use a finer mesh powder and more of it ... Check the manufacturers' specs.


Cheers,
Smoketown

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Ironhorse

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Re: Spark plug anti-seize compound
« Reply #8 on: July 21, 2019, 03:22:33 PM »

All I know about anti-seize compound is that chit gets on everything, and you can't clean it off.
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Smoketown

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Re: Spark plug anti-seize compound
« Reply #9 on: July 21, 2019, 05:15:38 PM »

All I know about anti-seize compound is that chit gets on everything, and you can't clean it off.

And the absolute BEST and WORST of the bunch is military grade with 'moly' ...  Used to put it on the ear-piece of the foreman's phone.

I used to live by the LAX ... Ever eat at Tito's or MaGoos?

Cheers,
Smoketown
« Last Edit: July 21, 2019, 05:17:46 PM by Smoketown »
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Ironhorse

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Re: Spark plug anti-seize compound
« Reply #10 on: July 21, 2019, 05:23:27 PM »

And the absolute BEST and WORST of the bunch is military grade with 'moly' ...  Used to put it on the ear-piece of the foreman's phone.

I used to live by the LAX ... Ever eat at Tito's or MaGoos?

Cheers,
Smoketown

I love Tito's Tacos!!!  Where did you live near LAX? My house is in Westchester, just two blocks from LMU.
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Smoketown

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Re: Spark plug anti-seize compound
« Reply #11 on: July 21, 2019, 05:44:11 PM »

I love Tito's Tacos!!!  Where did you live near LAX? My house is in Westchester, just two blocks from LMU.

Two all meat burritos with cheese please!  The Avocado Cha-Shu burgers at MaGoos were the best!

Used to live over by Emerson Manor Elementary.

Cheers,
Smoketown
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bakon

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Re: Spark plug anti-seize compound
« Reply #12 on: September 08, 2019, 07:54:08 PM »

Cheap silver for 20 years. No problems. Mine is a stick, little dab on one spot. Threads will spread it when screwed in.
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Will

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Re: Spark plug anti-seize compound
« Reply #13 on: October 10, 2019, 02:47:25 PM »

All I know about anti-seize compound is that chit gets on everything, and you can't clean it off.

How true this is!

Much truth to the difference in anti seizes.as well. Copper will potentially foul 02 sensors and clog catalytic converter (s) just use enough to lightly coat the threads. All you want to do is prevent the dissimilar metals from getting stuck together.
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bigchuck

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Re: Spark plug anti-seize compound
« Reply #14 on: October 12, 2019, 11:57:31 AM »

Over thinking it. Use either one. Just don't use too much and you'll be fine.
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