Which spark plug is colder???
06-09-2007, 12:08 AM
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Which spark plug is colder???
An AC delco R42LTS6 or an Autolite 103?
AC Delcos are in there now and I'm looking for a colder plug to see if helps with some pinging (and knock retard) that I'm hearing at high coolant temps and high ambient temps.
AC Delcos are in there now and I'm looking for a colder plug to see if helps with some pinging (and knock retard) that I'm hearing at high coolant temps and high ambient temps.
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