Does the kind of gas make a difference? (87 89 91 93)

[Beholder88]

/\ +1 Yup, just stick with the 87 or the 89, whichever the local gas station carries. That's what the Alero was built to use. If you feel like it, just get a bottle of octane booster or carb cleaner and run it through your tank every now and then.

EDIT: I was replying to ION here, couldn't type fast enough...