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post #1 of 7 (permalink) Old 12-29-2010, 02:24 AM Thread Starter
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Mixing Octane Chart

I just found this. Figured it might help some people figure who like to run high octane levels.

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post #2 of 7 (permalink) Old 12-29-2010, 08:17 AM
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The formula for such would be the number of gallons times the octane of what's present plus the number of gallons times the octane of what's added divided by the total number of gallons.

IE, 3 gallons of 87 plus 15 gallons of 93:
(3 * 87 + 15 * 93) / 18
= 92

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post #3 of 7 (permalink) Old 12-29-2010, 08:25 AM
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I remember back in the late 70s that one could mix Reg (leaded ) with unleaded premium and get hi octane #s , But then it was Amoco white gas 93 octane and Sunoco 94 octane

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post #4 of 7 (permalink) Old 12-29-2010, 10:17 AM
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post #5 of 7 (permalink) Old 12-29-2010, 01:47 PM
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Quote:
Originally Posted by theterminator93 View Post
The formula for such would be the number of gallons times the octane of what's present plus the number of gallons times the octane of what's added divided by the total number of gallons.

IE, 3 gallons of 87 plus 15 gallons of 93:
(3 * 87 + 15 * 93) / 18
= 92
very good. It's all it is; a weighted mathematical average.
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post #6 of 7 (permalink) Old 12-30-2010, 05:02 PM
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Originally Posted by guitar maestro View Post
very good. It's all it is; a weighted mathematical average.
You people and your math...







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post #7 of 7 (permalink) Old 12-30-2010, 05:24 PM
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Well I could drum up an algebraic equation for it...



O1 = Octane 1
O2 = Octane 2
Or = Resultant Octane
G1 = Gallons 1
G2 = Gallons 2

Or = (O1 ˇ G1 + O2 ˇ G2) / (G1 + G2)


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