Thanks for the reply, I will ask them.
I would be very interested in the details behind it, like what makes a plug cooler and how it helps. Isn't it the combustocombustion the biggest cause of the heat? Like I said, I am a bit illiterate when it comes to spark.
Pinging, or preignition, is caused by the air fuel mixture igniting before it is supposed to.
It is usually caused by a heat source within the combustion chamber, like carbon buildup, too hot of plug,
or compression too high for the type of gas used.
Can also happen if the spark is way too advanced.
A colder plug has a shorter electrode length, which makes it run cooler.
This will help if you have minimal pinging problems.
In my case, it just showed up out of the blue one morning.
I had done nothing to the engine, and was half way through a full tank of gas.
I am running a stock engine, stock plugs, doubt there was much carbon by reading my plugs.
Later I even tried the best gas I could get, but no difference.
Had to look for a problem.
