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Because it is a very cold heat range plug. The higher the number in NGK the
colder the plug. Racers use R6725-11.5.
Lynn E. Hanover
In a message dated 9/14/2013 11:52:42 P.M. Eastern Daylight Time,
SBoese@uwyo.edu writes:
Yes, all
four plugs BR10EIX
Steve Boese
On Sep 14, 2013, at 9:46 PM,
"Chris Barber" <cbarber@texasattorney.net> wrote:
> Steve, is
that spark plug for both the leading and trailing?
>
>
Thanks,
>
> Chris
>
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