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1964-1970 Mustang Member Tech & Restoration Discussion

Fuel octane?

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Old Feb 21, 2011 | 01:48 PM
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Mustangmike66's Avatar
Mustangmike66
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Fuel octane?
I have a 1966 Mustang GT "A" code. I was wondering what fuel grade others are using. I use 87 octane. Any thoughts?
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Old Feb 21, 2011 | 05:50 PM
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HOSS429
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From: alerbamer
if it works well with 87 there`s no reason to go higher
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Old Feb 21, 2011 | 08:02 PM
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Falchion
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It could knock, but if it doesn't then it should be OK?
Last edited by Falchion; Feb 21, 2011 at 08:04 PM.
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Old Feb 24, 2011 | 01:03 PM
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codeman94
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From: Goshen, IN
I use 87.. no problems.
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