What Fuel to use in a 1966 Stang?

[PKRWUD]

I'm sure it has hardened seats, then, and like everyone's shop teacher used to say, the only stupid question is the one you were afraid to ask.

If it's only got 30 miles on it, you need to be sure the rings have seated. Go to a large, empty parking lot, or an empty street in an industrial area, and from a rolling start, gun it for 2 or 3 seconds, and let in wind down, then gun it for a few seconds, then let it wind down. Don't use your brakes, just leave it in first, and do this 10 or 12 times.

Drive it conservatively for the first 500 miles, and stay away from long, steady high rpm driving (no road trips on the freeway) for at least 750 miles. Change the oil and filter again, and you're good to go.

Take care,
~Chris