> The problem here is that the NGK will probably cross reference to the
> RC12YC and not directly to the RC12LC4 which uses a longer core nose (the L
> part of the #).
I'm having trouble understanding the verbal description of "longer core
nose." Does it refer to a longer threaded portion of the plug, or is there
some difference in the center electrode causing it to extend through the
plug end further than the RC12YC? The latter doesn't make sense to me,
as it would seem to imply a hotter heat range.
> I have tried those Autolite platinums and was not impressed at all. They
> use a small raised portion on the center electrode (the platinum
> supposedly) that wore down very quickly with me.
Hmmm, thanks for the warning. Were these the double or single platinums?
If I do bother to try them out, I plan on the double platinums. But I will
definitely heed your advice to check for wear after a few thousand miles.
Later,
Ron
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