First I have to say I bought a SPORTS CAR not an economy car. For a sports car our cars get good fuel economy but anyone who purchased a sports car expecting fuel economy probably didn't think things all the way through. I did run a test with two tanks on regular once and found a noticeable drop in performance and MPG despite what the article states. I have since had my ECU remapped and tuned for 93 and I have not used regular since.
I say use PREMIUM. JMHO

This message was approved by by me but I have since decided I must withdraw that approval !