Spark Plug makers say no anti-seize

I've never used anti seize or a torque wrench and have never had a problem with spark plugs.

 

anti seize definately has it's place. ....but i've never even thought about using it on spark plugs.

 

That's a good point.

 

Appears the link above is no longer valid, but the document can be found here:

http://www.jagrepair.com/images/AutoRepairPhotos/NGK_TB-0630111antisieze.pdf

 

I usually tend to under torque by 5-10% whenever using something that can act as a lube on threads. With less friction, applying same torque puts more axial tensile load in shank/threads. I had issue at work with a supplier popping heads off bolts. I did the math to show how loctite was reducing friction and causing excess tension when torque wasn't reduced to account for it. Granted, it's more of an issue on small threads. Spark plugs are large enough to take a bit extra.

 

1) ya know....

spark plug makers and engine makers have engineering conferences on exactly how to
design spark plugs, connections, and plug threads, and what materials and metals to use.

2) they don't recommend anti-seize... it is for real reasons

3) anti-seize interferes with reliable electrical connection on the thread and can induce problems
in the coil, induce arcing, walking out of the bore......etc.

if you change plugs on recommended interval and it has always been torqued correctly you
ain't gonna have an issue [unless it is one of those awful ford plugs]

anti-seize -probably- won't cause electrical issues,
but using no anti-seize absolutely won't.

 

Original NGK link no good, but I found this there:

https://www.ngksparkplugs.com/about-ngk/spark-plug-101/5-things-you-should-know-about-spark-plugs

 

I dont use anti-seize, but I do use a little dab of 5W-30 on the threads.

 

I only skipped through the thread I use Never Seize and change the plugs every spring!! Along with the fuel filter

Having to cut a fuel filter off and pull heads to install thread inserts makes the added expense well worth it to me.

It seems most times the battery as well I am getting better on batteries

 

One more note: just watched a shop ferret out a severe miss on a youtube video. Turned out the way-too abundant amount of antiseize was causing the voltage to jump down the side of the plug, including the threads.

 

I use it...the link sends me to 404 but yea I don't use alot at all, just a drop or so. I also use it on lug nuts some, its great stuff when used properly! Like when I use my tap set to clean up a mangled bolt thread I put some nickel anti-seize on it. Just the way my dad taught me I guess...he's an engineer so I usually listen to him

 

Only time I use nickel Anti-seize is for the mustang with those god awful 2 piece plugs.

 

Stupid shit always happens when "reasonable" is replaced with "unreasonable". If you use a reasonable amount stupid shit won't happen.

 

Take a spark plug out that brings the threads out of the head with it, you'll use a little anti seize from that point on. The engineers can do whatever the hell they want to.

 

Use nickle based anti-seize on spark plugs and not copper based AS. Nickle is inert and makes a perfect electrical connection without any dielectric corrosion that copper will. I only use nickle based anti-seize on everything. Remember what happens to the steel lines going into your water heater from copper pipes without a dieletric connector. I don't know why they even make copper based AS as the nickle is vastly superior.

 

Oh no, I used a tiny dab on every spark plug yesterday. You could feel when the dry threads met the anti-seize and the squeaking of threading it in stopped. I wonder what'll happen next...........same as last time, notta fuckin thing. The plugs will come out in 100k just like they did this time.

 

Those engineers are not the ones fighting with stuck and broke spark plugs .

No doubt needed something to justify there salary

 

I would think the connection between the plug & head would be at the base of the plug where it seats to the head, not the threads. There's clearance between the plug to head threads, otherwise you couldn't screw them in.

 

sorcery................