Gas Milage

hey
i am wondering if any one knows how many more miles to the gallon you can get by running higher grade gasses? i am just wondering if it is worth the extra money to do it or if it is a waste

In my '99 2WD 4DR it made no difference. It gets 15 town and 20 highway no matter what I burn.

hey
i am wondering if any one knows how many more miles to the gallon you can get by running higher grade gasses? i am just wondering if it is worth the extra money to do it or if it is a waste

If it's not pinging then it's a waste. Run the grade specified in the owners manual. But then who knows?? Try it and see what happens for a tank or two.

Been my experience that grade does not matter at all for for mileage. However I agree with 777 run the min you need to keep her from pinging. I run regular for normal driving and when I tow over 5000 lb's I run the mid grade in my 01. My buddy's 03 needs premium when towing anything over 4000 lb's. Not sure why, guess it's just the difference in the way the engines where made.