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Discussion Starter #1
This past weekend I changed to 12c plugs to try and stop some minor pinging I had. The car now runs a little hotter. Is this normal? I'm all stock 4.6.
 

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Discussion Starter #2
It's running fine now. It could have had something to do with the fact that it was 115 degrees yesterday!
 

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12c's? Didn't even try the 22c's?
Oh well, if it works good now leave it go.
 

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Discussion Starter #4
Seems to be running fine. I'll have to see what happens when it cools down in the fall.
 

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Refrigerator Raider Hater
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The colder plug transmits more heat from the combustion chamber to the the head.
 
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