Hey Scotty and friends!
2013 Grand Cherokee, 5.7 hemi V8. Installing new plugs (Autolite iridium). Once again, the internet is all over the place... do I need antiseize on the plugs or not?
PS: thanks for the last answer & recommendation.
If you put steel threaded spark plugs into a threaded aluminum cylinder head, use anti-sieze compound on the spark plug threads.
I'm going to be honest, I've never used anti-seize on spark plugs before, and I've never had any issues while changing them out. Some manufacturers say to not use it and some say to use it. I only use NGK spark plugs and they say to NOT use anti-seize on them. Just check the manufacturer's recommendation if you want to be careful. But in my experience, not using any doesn't cause issues.
I always tell people this; NGK ain’t going to pay for crap say if the plugs end up seizing up in there due to no anti-seize. $5 now and carefully tightened, you wont hurt a thing.
@mrrangerzr1
I've had no problems before, and I trust them. They're the leading spark plug company. They have a special Zinc coating on them that prevents the threads from corroding and locking up. It's very risky messing with torque specs using anti-seize. You can easily overtorque them with anti-seize and potentially make things worse.
A little bit on the threads can't hurt. Just don't go overboard.
Realistically speaking how many people use a torque wrench when installing spark plugs? I never have. Watch Scotty's videos, he doesn't either.
You're installing Autolite spark plugs.
Here's what they have to say about it.
https://www.autolite.com/resources/tech-tips
No problem to use anti-seize on spark plugs, … just make absolutely sure you reduce torque by 20%, … just like you should reduce torque by 20% on all fasteners while using anti-seize.
Best,
F.S.
Do you recommend using Anti-Seize on Spark Plug Threads?
Please use the search function, this topic has been covered before. Thank you. (Topic merged.)