I usually do and made sure this plug/wire got some. That was my initial plan to grease it and see if that took care.of it ,but then I saw the crack.thanks
I just read an article on Engine Labs (I think that's where it was) about Ford switching to 12 mm diameter plugs. One of the things with that plug they developed was they used a different end on the plug (IIRC they called it a VW end) and that allowed then to make the porcelain of the plug longer. The upshot of the longer porcelain was to reduce/eliminate fracturing the porcelain.
