I was perusing some of the older posts from the performance part of this forum and ran across one that said to use 93 octane and one that said to use 91 octane. I just use your basic regular gas. Not sure what octane. What is the best for 2.4 base or is it no big deal? Every car I have ever had I just put in the regular, push the button on the extreme left and call it good. Will a higher octane hurt anything? I mean its a Sky. Not that exotic.