They're all unleaded. It's illegal to sell leaded gasoline now.

If your car doesn't run rough on the gas, by all means, use it! ;) I'd love to use lower octane gas, if my car would take it... but it just doesn't like anything but V-Power in its current state of tune. It'll run better on 92 or 93 octane, though, than Blaze... for some odd reason, but it runs best on V-Power.