Old spark plugs 107k
#6
The corrosion on the threads is water/moisture getting down through the outside. antisieze would prevent that, on the electrode its the wear from arching pitting and from being in the combustion chamber.
#7
Take another look. The moisture is coming up from the engine!
#9
I know with newer engines they say you can go 100K miles on a set of spark plugs but I always felt uncomfortable leaving them in that long. I change mine after 50K. Might be a waste of money but it gives me piece of mind.
Last edited by choochmalooch; 11-14-2019 at 06:03 AM.
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StephenOSU
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09-26-2012 07:09 AM