I need some help here.

On the way home from work when I was getting on the freeway I noticed what I *think* was some pinging happening. I say think because I am honestly not sure at all. My drivetrain has always been noisy, but it was noticeable this time. To be fair it was probably in the high 90s today, and the noise only became noticeable when I was WOT. I have shell 87 in the tank.

I am assuming this is pinging, so I am gonna stick some 92 in there tomorrow. Does anybody have some links to some vids that show mustangs pinging? I have checked youtube but nothing has hit yet.

Thanks