Spark plug threads

[Ronnie's.930]

Originally Posted by Concestor0

This is a tech bulletin from NGK regarding anti-sieze. Spoiler alert - they say not to use it.

The idea that anti-seize would promote over-tightening to the point of plug breakage is rediculous.

[zippy_gg]

Originally Posted by Ronnie's.930

The idea that anti-seize would promote over-tightening to the point of plug breakage is rediculous.

It makes some sense since the anti seize acts as a lubricant, and tightening bolts that have Loctite on them requires more torque...

[mreid]

I will continue to use anti-seize. I also don't use plugs with any special coatings on the threads.

[Tippy]

Quote de Concestor0

This is a tech bulletin from NGK regarding anti-sieze. Spoiler alert - they say not to use it.

The idea that anti-seize would promote over-tightening to the point of plug breakage is rediculous.

Plug breakage, yes. Ripping threads out of head due to extra torque being reached because of the lubricating properties of anti-seize, very possible and happens frequently on vehicles.