nah not worth it, plus a million people will tell you just to use 87, including myself, but I'm more like the 867,421st person to say this. 87 was made for our car, your extra boost will come from aftermarket parts to your engine.Ok this is and easy on for you guys but ive had my 06 6s v6 for about a week. What octane do you guys recommend reg or prem. The book said Regular Unleaded 87 octane and above. So that means i can run Prem for that extra little bost right?