What kinda gasoline you take?

[Jolly Roger VX'er]

I run super cause of the SC, anyone every run mid grade with the SC?

And you can run 87 octane as the engine will retard timing (and power) accordingly. I cheat and use low octane during the week and 93-100 octane on the weekends.

87 is what the book calls for. Supercharger recommends 91+ but our knock sensor is able to handle the lower octane (with noticeably less power) without damage for those with the SC trying to save money...

I'm pretty sure that the mixing occurs at the pump/station - they only have two tanks in the ground too. It is usually cheaper to mix it yourself - do two transactions, one from the regular and one from the premium.

Hi Cyrk...based on all the above I've been alternating fill-ups from 1/2 tank between premium Amoco 93 and regular 87 during the week for regular driving; and running most/all of it out by the weekend or vacation and filling up with pure premium if I'm off and planning any "fun" driving excursions. So far no ill-effects, but, I keep my foot out of the boost to avoid any issues until I know I got a good fill-up of 93.