Now, I know that these were found in just about every garage. I see that AirCraft Spruce, and other aircraft supply places, and some tractor places still carry them. Does anyone here have any experiences they can share? I know, plugs are cheap, but so am I. I don't want to run the same plugs for the next twenty years or anything, but I would like to clean them when I change oil and check points etc.
Christopher
