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ngk and their statement on anti seize

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pauleyman

DSM Wiseman
9,298
3,541
Nov 19, 2011
oklahoma city, Oklahoma
I have never used lube on spark plugs. Its the one place i dont really. I think i was told this years ago by someone and maybe subconsciously it stuck in my head without knowing why.
 
I've never used any grease on plugs either, but I can see why someone would think it's a good idea, especially if they had a hard time taking cooked plugs out...

On a related note, I recently discovered that you should NOT use antiseize on wheel studs/nuts. It may cause the nuts to back out completely even if you torqued 'em. Eh, the more you know :idontknow:
 
The mechanic that I worked for back in 1976-80 ALWAYS put a drop of oil on the threads of sparkplugs.
He was a Marine (as in military) mechanic and everything he did had a purpose. I always grab the dipstick of the car and put a dab on one plug then take another plug and run the threads around each other to spread a tiny amount.
After pulling the back two passenger side plugs on my moms 1969 Ford F350 this weekend (it took a BREAKER BAR to get them out and they were rusty as hell), I continue to do as he taught me.
Thanks to Mr Arnold Bynum, RIP old guy, RIP, and thanks for all of your knowledge.
 
I've never used any grease on plugs either, but I can see why someone would think it's a good idea, especially if they had a hard time taking cooked plugs out...

On a related note, I recently discovered that you should NOT use antiseize on wheel studs/nuts. It may cause the nuts to back out completely even if you torqued 'em. Eh, the more you know :idontknow:
I use silicone grease in the boot. Ive seized too many. Got yelled at on a warranty issue one time because I refused the small grease package. Guy at the counter gave me what for. After he finished I pulled out the larger tube of grease from my pocket and told him he should NEVER assume the customer does not know what he's doing.
I'd like to know more about the lugnuts. I've used anti seize frequently
 
I use silicone grease in the boot. Ive seized too many. Got yelled at on a warranty issue one time because I refused the small grease package. Guy at the counter gave me what for. After he finished I pulled out the larger tube of grease from my pocket and told him he should NEVER assume the customer does not know what he's doing.
I'd like to know more about the lugnuts. I've used anti seize frequently
I put anti seize on them once a year just to protect against corrosion. Never had it back out and have always done this on all cars, my daily gets it also and those are non locking (2 piece)
 
I have always used anti-seize on plugs and wheel studs, as well as grease on spark plug boots and coil boots. It really sucks when the boots get stuck on a hot summer day and your brand new plug wires rip.

As for anti-seize, as long as you're not trying to hulk the plugs into their homes when tightening them, you should be fine. I've ran into two situations where I wish anti-seize had been used on the plugs in aluminum head motors, and ended up having to have the plug holes helicoiled/repaired because they weren't. I do believe one set was NGK as described in the link, the other side were probably autolites from what I remember with the black oxide coating.

The plugs had welded themselves to that head threads and pulled them right out. Ever since then I've used them small amount of nickel and I sees all the threads and I have never had a single issue since then. We'll studs really should have anti-seize put on them, IMHO, as well as a small amount around the hub centric portion of the wheel and face of the wheel pads. Having to take a 5 lb dead blow to a wheel to remove it, or snapping a wheel stud off because it's so rusted makes for a bad day at work.
 
In some cases it may cause a false torque reading and your torque wrench might 'click' earlier or later if the antiseize gets inbetween both surfaces. But then in other cases a little bit of lube such as oil is required so the nut doesn't bind up against the wheel seats (semi truck wheel nuts, for example). It's a controversial topic and yeah maybe 95% of the time it wont make your wheels fall off if you put some antiseize on 'em but it's always a case of either-or.
 
I want to say 100% that the bottle says no anti-seize on lug nut threads/studs. I use to but not no more after reading how it effects clamp load.

I do use it on spark plugs but I'm no expert. Everyone has the options and their "experience"
 
https://www.tirereview.com/bad-advice-for-lug-nuts/

Don't lube your wheel studs. Improper torque can cause damage to studs or nuts to loosen over time.

Proper tire rotation and general maintenance means you will be taking your wheels off every few K miles anyway. I clean my studs with a rag and brake cleaner almost every time I remove my wheels. This ensures the studs and nut are free of damaging debris.
 
I just installed a set without and I've made up my mind. I'm using it. I only apply a very very thin layer and I've done so for nearly 30 years and dozens of sets of plugs. Never an issue of any kind ever. Your results may vary I suppose.
 
I may be confusing things but everything I've read on the subject of anti-seize and spark plugs and lug nuts seem to point at changes in torque values caused by the lubrication and the problems over torquing both cause. I accept the data as valid but think there is a bigger issue with people thinking they have a calibrated arm and know how much torque they are applying or using a torque wrench at the extreme ends of their ranges. That 3/8" 10 to 80 ft lbs isn't very accurate at either end so don't be surprised when over torque your plugs with it.
 
I can understand the issue with over torquing, hardware usually has a specific dry, oil & say moly lube torque value with dry needing the highest torque due to friction and moly being the least torque from less friction.

That being said I've used anti seize over the years and really have not had a single issue attributed to its use, no science to it, maybe I'm just lucky, living on the edge

I also try to stick to using a torque wrench and torque specs when applicable and that includes me using a torque wrench on my spark plugs and lug nuts
 
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