Fuel mix formula - 460 Ford Forum
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post #1 of 4 (permalink) Old 03-15-2008, 03:01 PM Thread Starter
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Fuel mix formula

I know its been discussed before but I did a search and cant find it. I have 10 gallons of 112 and would like to reduce it to 89 octane for the boat. Thanks in advance Gregg 8)
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post #2 of 4 (permalink) Old 03-15-2008, 03:16 PM
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Is the high octane gas leaded or unleaded...? It makes a little bit of a difference.
The addition of tetraethyl lead to fuel is reverse logrythmic; (the more you add the less it raises the octane).
One gallon of 112 leaded mixed with 15 gallons of 87 regular is about 6 1/4% and should get you above the 89 octane target.

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post #3 of 4 (permalink) Old 03-16-2008, 04:58 PM Thread Starter
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89 octane

Thanks Randy
Gregg 8)

By the way is Terry's Sub shop still open I think its on 15 mile at Gratiot.
Man they used to be awsome. :lol:
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post #4 of 4 (permalink) Old 03-16-2008, 08:48 PM
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15 Mile & Gratiot has been totally redone ... it now has a LOWE'S on the northwest corner where the strip mall used to be. Another strip mall is next to it so, they may or may not be in there.

Progress you know ...

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