06-03-2015, 03:04 AM
I always use a little dielectric grease on the top of the spark plugs. It makes for a better contact and keeps out moisture. Not sure if you really need it on the ceramic, but it won't hurt. I also use high-temp (1600 degrees F) on the threads like you indicated. It doesn't take much, just a thin coating. This will prevent the plug from becoming stuck in the engine. It will also lube the "crush washer" on the plug. There is NO need to add more of the Evinrude Triple Guard grease, since it just duplicates what the antiseize does.
This info is coming from a guy who spent last weekend changing the original plugs in his 2005, 5.4L Ford Triton engine. They are the absolute worst design (likes to snap off in head) and I spent months researching this before attempting it. Including what antisieze to use, the purpose of dielectric grease, etc. If you don't believe me, just Google this engine and you'll find dozens of videos.
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This info is coming from a guy who spent last weekend changing the original plugs in his 2005, 5.4L Ford Triton engine. They are the absolute worst design (likes to snap off in head) and I spent months researching this before attempting it. Including what antisieze to use, the purpose of dielectric grease, etc. If you don't believe me, just Google this engine and you'll find dozens of videos.
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