Henry - please don't think my comment on broken plugs caused by "rushing" was aimed at everyone. It's also clear that some plugs are just too carbon fouled to get out in one piece. You certainly seem to know what you're doing - and, you're braver than I am.
I'm curious, what kind of driving do you do? Is it mostly city, mixture of city and highway or mostly highway? I've been trying to get a feel of the effect of this on plug breakage. My gut feeling is that highway driving should cause the least carbon buildup and would give less plug breakage.
Bluejay, over on f150Online swears by Techron as a carbon buildup preventive. Personally, I've never thought much of gas additives, but maybe in this case....
I wonder too if the anti-seize around the plug nose will stop future breakage? We'll have to wait a while to find that out, won't we?
- Jack
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