Quote:
Originally Posted by Mr_Draco
Around here, when regular hit $4.50 a gal premium was almost $6 a gallon. Run your comparison with these numbers and you get;
gas 87.............$ 4.50
gas 93.............$ 6.00
City mod..........50.0%
lead foot mod...50.0%
miles / yr........12,000
Cost
MPG Gallons Yearly Monthly Daily
V6 18.8 640 2,880.00 240.00 7.89
V8 16.0 750 4,500.00 375.00 12.33
------------------------
1620.00 135.00 4.44
=> V8 costs 56.25% more
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Wow, you guys were getting screwed. Bummer.

If you look at the historical data when gas was above $4.00/gal the AVERAGE national price spread on the 93 was approximately $0.30. There are quite a few references to this online. For that price you could get 87 and mix in some 100 for $7.00/gal.