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Anti seize on spark plugs #4578553
11/19/17 02:00 AM
11/19/17 02:00 AM
Joined: Sep 2013
Posts: 102
ny
llmercll Offline OP
llmercll  Offline OP
Joined: Sep 2013
Posts: 102
ny
I'm doing my first ever spark plug job tomorrow on my 2003 Jetta. I am confused as to whether or not I should use anti-seize, as I've read varying opinions.

The plugs are autolite platinum. I am currently thinking I don't need to use them as the platinum ones aren't as likely to seize as copper, but am not certain.

Can anyone verify if I'm right or if I need to use anti-seize?

Re: Anti seize on spark plugs [Re: llmercll] #4578558
11/19/17 02:25 AM
11/19/17 02:25 AM
Joined: Jun 2012
Posts: 681
Reno, NV
redbone3 Offline
redbone3  Offline
Joined: Jun 2012
Posts: 681
Reno, NV
Platinum or not is immaterial. The plug manufacturers claim is that if the threads are nickel plated there is no need for anti-seize. I always use a small amount on the threads. Can't hurt. Don't get any on the electrodes.


2014 Passat Wolfsburg, 1995 Miata.
Re: Anti seize on spark plugs [Re: llmercll] #4578565
11/19/17 03:03 AM
11/19/17 03:03 AM
Joined: Jan 2013
Posts: 1,920
Texas
WyrTwister Offline
WyrTwister  Offline
Joined: Jan 2013
Posts: 1,920
Texas
Not sure , but I seem to recall some plugs come with it already on them , out of the box ?


Wyr
God bless
Re: Anti seize on spark plugs [Re: llmercll] #4578577
11/19/17 04:42 AM
11/19/17 04:42 AM
Joined: May 2005
Posts: 10,390
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline
Joined: May 2005
Posts: 10,390
ROCHESTER, NY
[Quote-llmercll:] "I am currently thinking I don't need to use them as the platinum ones aren't as likely to seize as copper, but am not certain".
______________________________________________________________________________________

It isn't the spark plug threads that are Platinum or Copper(or Iridium), it's the electrodes. As "redbone3" has mentioned, if the threads are already plated(nickle or otherwise), there is no need for anti-seize. However, I always use a tiny bit of anti-seize on the threads. Also as mentioned, DON'T GET ANTI-SEIZE ON THE ELECTRODES! smile

At this point in the car's life, it isn't going to matter as this is most likely the last plug change you'll be doing on the Jetta and in the next 14 years, it'll be someone else's concern or the car will be in the crusher.


Last edited by Char Baby; 11/19/17 04:43 AM.

"Retired"
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX
Re: Anti seize on spark plugs [Re: llmercll] #4578582
11/19/17 05:39 AM
11/19/17 05:39 AM
Joined: Jul 2005
Posts: 30,620
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,620
NY
I've been using it for years on the threads of anything with a spark plug, and any kind of plug, no problems to report.


God Bless Our Troops

Re: Anti seize on spark plugs [Re: llmercll] #4578595
11/19/17 07:09 AM
11/19/17 07:09 AM
Joined: Jun 2013
Posts: 307
sw ohio
willbur Offline
willbur  Offline
Joined: Jun 2013
Posts: 307
sw ohio
Originally Posted By: llmercll
I'm doing my first ever spark plug job tomorrow on my 2003 Jetta. I am confused as to whether or not I should use anti-seize, as I've read varying opinions.

The plugs are autolite platinum. I am currently thinking I don't need to use them as the platinum ones aren't as likely to seize as copper, but am not certain.

Can anyone verify if I'm right or if I need to use anti-seize?


All plugs are copper but not the threads or electrodes. Antiseize is probably applicable to used plugs but not on new because of the anti friction plating. My Honda FSM says to use antizeize on the threads and torque to 18 #. YMMV

Re: Anti seize on spark plugs [Re: llmercll] #4578609
11/19/17 07:47 AM
11/19/17 07:47 AM
Joined: Jul 2009
Posts: 621
texas
danez_yoda Offline
danez_yoda  Offline
Joined: Jul 2009
Posts: 621
texas
I think of it this way. The combustion gasses push their way up tye tyreads to the crush seal on the outside of tye block. You f antisieze is in there it is incompressable so it will block the migration of exhaust soot from going up there abd cruddibg up the the threads

Re: Anti seize on spark plugs [Re: llmercll] #4578613
11/19/17 07:59 AM
11/19/17 07:59 AM
Joined: Oct 2014
Posts: 1,279
NoVA
Jimzz Offline
Jimzz  Offline
Joined: Oct 2014
Posts: 1,279
NoVA
I use a very small amount on plugs, even the nickel coated ones. Many say its not needed but I have had some newer ones be a pain to get out. So a very small amount goes a long way.


yup
Re: Anti seize on spark plugs [Re: llmercll] #4578614
11/19/17 08:00 AM
11/19/17 08:00 AM
Joined: Jan 2008
Posts: 1,021
TX
robertcope Offline
robertcope  Offline
Joined: Jan 2008
Posts: 1,021
TX
I would do whatever the plug manufacturer suggests. NGK says not to, so I don't.

"NGK spark plugs feature what is known as trivalent plating. This silver-or-chrome colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during spark plug removal. NGK spark plugs are installed at the factory dry, without the use of anti-seize. NGK tech support has received a number of tech calls from installers who have over-tightened spark plugs because of the use of anti-seize. Anti-seize compound can act as a lubricant altering torque values up to 20 percent, increasing the risk of spark plug thread breakage."

Re: Anti seize on spark plugs [Re: llmercll] #4578621
11/19/17 08:10 AM
11/19/17 08:10 AM
Joined: Jul 2009
Posts: 621
texas
danez_yoda Offline
danez_yoda  Offline
Joined: Jul 2009
Posts: 621
texas
As far as torque goes, I still use what the plug manufacturer says for that engine. Snug down then 1/4 - 3/4 turn. I try to make it to nearly 3/4 but stop when my knuckles turn white. smile

Re: Anti seize on spark plugs [Re: llmercll] #4578623
11/19/17 08:12 AM
11/19/17 08:12 AM
Joined: Mar 2008
Posts: 5,873
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,873
South Florida
I always use it, to include NGK. Just don't over tighten and strip the threads.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
10 Acura TSX 2.4 PZL Plat 5W30
06 GMC Sierra Nextgen 10W30


Re: Anti seize on spark plugs [Re: llmercll] #4578639
11/19/17 08:36 AM
11/19/17 08:36 AM
Joined: Aug 2013
Posts: 2,541
Central Maryland
HangFire Offline
HangFire  Offline
Joined: Aug 2013
Posts: 2,541
Central Maryland
The real issue here is aluminum powder kills oxygen sensors. You'd have to be a real slob putting excess A-S on there to do that, but what you put on is multiplied by 4, 6 or 8 (the number of spark plugs), so the industry gives the usual generic advice not to use it (without explaining why.)

But if you have aluminum heads, you shouldn't be using an aluminum based anti-seize on spark plugs anyway. Use an anti-seize that is a.) a dissimilar metal to the head and spark plug, and b.) compatible with the downstream O2 (lambda) sensor. That means bronze anti-seize, or nickel IF (and only if) the spark plug threads aren't already covered with nickel plating. And, use it sparingly! I put a dab on one spark plug, and then rub it off on all the rest by rubbing the threads round-and-round together, then wipe off the excess on all plugs. It should only slightly color the threads all around, and not exist at all on the face (electrode and cylinder facing side).

Re: Anti seize on spark plugs [Re: demarpaint] #4578654
11/19/17 08:53 AM
11/19/17 08:53 AM
Joined: Oct 2012
Posts: 4,791
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,791
Taiwan
Originally Posted By: demarpaint
I've been using it for years on the threads of anything with a spark plug, and any kind of plug, no problems to report.


I've havn't been using it for years on the threads of cars, motorcycles 2 and 4 stroke and a mercury outboard , no problems to report, so far.

So you pays your money, and you takes your choice.

(Lately I've been using NGK's which say not to.)

Re: Anti seize on spark plugs [Re: robertcope] #4578661
11/19/17 09:00 AM
11/19/17 09:00 AM
Joined: Nov 2006
Posts: 20,128
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,128
MA, Mittelfranken.de
Originally Posted By: robertcope
I would do whatever the plug manufacturer suggests. NGK says not to, so I don't.

"NGK spark plugs feature what is known as trivalent plating. This silver-or-chrome colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during spark plug removal. NGK spark plugs are installed at the factory dry, without the use of anti-seize. NGK tech support has received a number of tech calls from installers who have over-tightened spark plugs because of the use of anti-seize. Anti-seize compound can act as a lubricant altering torque values up to 20 percent, increasing the risk of spark plug thread breakage."


The plating while better than non plated threads doesn't always work as intended . They don't recommend anything additional for liability reasons not because the coating is that good.
Manufacturers quickly change their tune when for example the dealers are lifting cabs off to repair plugs that wont come out or break off. All of a sudden there is a TSB to use never seize.

I have put a very small amount on every plug I have changed working as a pro since 1975, no exceptions and never had an issue.
All it takes is a very small amount and get none near the electrodes and reduce the torque installing them, just tighten them firm with a 3/8 ratchet is good enough.
Most of the time the torque value is too low for the tool to be accurate and the area too confined to use a torque wrench.
Lathering it on and tightening them like lug nuts is a recipe for disaster.


ASE L1, Master. Deutsch Meisterbrief.
Re: Anti seize on spark plugs [Re: llmercll] #4578702
11/19/17 09:44 AM
11/19/17 09:44 AM
Joined: Nov 2016
Posts: 1,280
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,280
WI
I always use it. Just a small dab, that's all.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
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