No way Jason, a 6 heat range plug is colder, the plugs
have nothing to do with taking heat out of the
chamber, the colder the plug the colder the electrodes
run and the less likly they are to glow red hot and
start detonation or burn up under hard driving
conditions.
5 heat range plugs are ok for regular driving but fast
driving or track driving requires 6 heat range. 6
heat range is fine for normal driving also. It is the
spec plug for europe and Japan. Anytime you replace
your plugs use PFR6G-11 or PFR6B-11 which is basicaly
the same plug.
6's are far less likely to cause detonation that 5's
not the other way around.
Mike
--- Jason Bosaw <[EMAIL PROTECTED]> wrote:
> Well I wouldn't say Hot and Cold. I would just say
> that a 5 is hotter than a
> 6 or a 6 is colder than a 5. I have experimented
> with the PFR6B's in my car
> and they're a little too cold for me. They don't
> take enough heat out of the
> combustion chamber and cause some pre-ignition.
> That's with advanced timing
> too. You should be able to play around with the heat
> ranges to find out
> which one works best. See the tech section on
> sparkplugs.
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