I bet you just didnt get in a situation where detonation can occur. I understand that low grade gas can cause it, but I don't see how something can be wrong with my engine. What could possibly cause it besides bad gas?
It has done it only a couple of times on the same tank of gas with the AC on (87 oct.) Otherwise the stang is tip top and accelarates smooth and strong. Do you think it was bad gas, or should I run 89 oct. from now on? (30k miles)
I get some pinging when I get on it in the heat with the a/c on (it was 90 degrees last week here)
Is this a concern? How can it be fixed? I use 87 oct. Stock GT