Should we use anti seize on spark plugs?

by Ed R in General Tech Discussion 7 years ago

My engine is a 912 ULS. Rotax says yes but NGK says no and these are NGK DCPR8E plugs. What do you experts do?

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Re: Should we use anti seize on spark plugs?

by Kevin Machniak » 7 years ago

Kevin Machniak

6 167 40

Do not use anti seize , but thermal paste. Use the thermal heat paste that is recommended in the Rotax line maintenance manual . use the described method ,and torque to 177 inlbs cold. there might be an instruction video on this site as well.

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Re: Should we use anti seize on spark plugs?

by Ed R » 7 years ago

Ed R

5 16 14

Got it, thanks for your help.

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Re: Should we use anti seize on spark plugs?

by David HEAL » 7 years ago

David HEAL

23 191 439

Definitely use thermal paste, but use it sparingly -- do not allow it near the tip of the plug.

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Re: Should we use anti seize on spark plugs?

by RotaxOwner Admin » 7 years ago

RotaxOwner Admin

59 1.59k 15.4k

video link: http://www.rotax-owner.com/en/videos-topmenu/rotax-minute/399-2-oil-inj247

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Re: Should we use anti seize on spark plugs?

by Roger Lee » 7 years ago

Roger Lee

128 5.28k 4.98k

Anti seize is old school. It is used to help prevent galling of the threads, but has no other real benefit. The thermal; paste will help sync the heat between the head and plug by about 40+ degrees. This will also help stave off detonation. The paste is silicone based. It will also help protect the plug threads, but has the added thermal transfer properties. Just apply the paste on approximately the top 1/2 of the plug. Remember here a little is more. DO NOT goup it on. Just a light coating as it is shown in the video. As you screw it in it will spread.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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Should we use anti seize on spark plugs?

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