[2000firebird]

all i see here is COST of premium as if its some huge expense... think about your average gas tank.. 15 gallons? on average i find midgrade always 10 cents more, and premium 10 cents more than that. so 20 cents more per gallon for premium.. lets say you fill up 10 gallons. so 2 dollars more you're getting premium, is it really that much of an expense, two bucks a week.

the purpose of a octane rating is just to tell you how well it can handle detonation. if you're not getting detonation with a lower octane then theres no point in using a higher one