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Thread: Octane Question
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post #13 of (permalink) Old 05-04-2019, 09:16 AM
Speed Demon
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Join Date: Sep 2009
Location: SoCal
Posts: 580
Pump gas has its issues ,..depending on what part of the country you live. Most gas doesn’t retain its octane level for more than three weeks unless treated if exposed. Carb 660 91 always to be safe... EFI stockers 87 should work..but if it sits , aftermarket HP parts, heat ,large tires and high loads 91
Might be a wiser choice

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