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Re: Bosch Platinum +4's

Mik Tip wrote:
> Anyone have any info, good or bad, about these
> new Bosch spark plugs?  Other than cost!
> Looking for good "real world-test data"
>From what I got from Bosch is, the +4's run too hot for 20V engines.
So until they make a colder run plug, platinums are out.

1990 20VCQ