At 07:32 AM 1/5/2003 -0700, you wrote:
>Ok, so you're saying that you would still recommend copper
>over platinum for a stock engine. That is the opposite of
>what was being recommended in mid 2000 on the list.
>Basically you can get a tiny bit more power from the copper
>plugs but they don't last as long as the platinum. So the
>concesus was then that if your engine is stock and you want
>longevity, go with platinum. But what I want to know about
>is the source for the information that a couple people
>stated that platinum plugs are BAD for the 4.7. I need to
>know more details rather than just a statment that they're
>bad for it. C'mon folks!!! Help me please!!!
In the Chilton repair manual that I have, it specifically
says to NOT use platinum plugs in the 4.7 because it can
cause pre-ignition.
The consensus from the service department at my dealer was
also about the same.
-Bill
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