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Adding a small amount of copper grease to spark plug threads primarily prevents the plug from rusting to the cylinder head and in Aluminium head cases, prevents 'cold welding'. The copper content also allows for greater earthing properties and contributes a very small amount to create an air tight seal.

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16y ago

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What type grease do you use on the spark plugs?

Anti seize on the threads, and dielectric grease on the plug wire end. Check manufacturer reccomendations as some are against using anti-seize grease. Also anti-seize grease which contains copper could be not compatible(corrosion) with aluminium alloy engine head.


Do you have to grease your new spark plug wires?

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Spark plugs use several materials, including steel, copper, platinum, porcelain, and a mineral called kyanite.


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use just a little anti-seize on threads


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Do you use never seize grease on the spark plugs on ford f 150?

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My guess is that it is a 3.1L motor correct?? If so, you remove the spark plug wires from the engine bank closest to the front ( left bank ) then remove the plugs...the rear ( right bank ) is not acessable unless you remove the "dog bones" from the left bank. there should be a small bolt hole under the dog bones to put the bolt that you had removed into it to pull the engine closer to the front. then remove the wires from the right bank and remove the plugs. make sure all the spark plugs are properly gapped using a spark plug gapper.. highly recommend that you use dielectric grease on the insides of the spark plug wire boots to prevent seizing and corrosion, then on the spark plugs use a small amount of anti-seize grease on the threads of the plugs also to prevent seizing and corrosion