91 octane to 100 octane
another method of figuring out your octane rating can be achieved mathematically. Here is the formula:
(octane rating x #of gal) + (octane rating x # of gal) divided by total number of gallons
(100oct x 7 gal) + (91oct x 7gal) / 14 gal
(700) + (637) / 14 gal
1337/14
95.5 octane
(octane rating x #of gal) + (octane rating x # of gal) divided by total number of gallons
(100oct x 7 gal) + (91oct x 7gal) / 14 gal
(700) + (637) / 14 gal
1337/14
95.5 octane
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