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Old 02-22-2021, 09:54 PM   #1
rod
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Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66
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Default race gas ?

if I mix 91 0ctane pump gas with 110 VP, do you really get 100 octane?
thanks Rod in AZ
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Old 02-22-2021, 10:35 PM   #2
J D Parker
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Default Re: race gas ?

It may be made for street cars but any amount of 91 octane will cause you to fail fuel check.
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Old 02-22-2021, 11:41 PM   #3
NHRA1926
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Default Re: race gas ?

He didn't ask about fuel check, he asked about octane rating.
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Old 02-23-2021, 02:33 AM   #4
Adger Smith
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Default Re: race gas ?

https://www.sunocoracefuels.com/tech...ulating-octane

Here this will help you figure it out.

BTW: just in case you didn't know.... mid grade is a mix of premium and regular.
something like 60% regular & 40% premium
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Old 02-23-2021, 11:35 PM   #5
e vassar
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Default Re: race gas ?

Quote:
Originally Posted by NHRA1926 View Post
He didn't ask about fuel check, he asked about octane rating.
Right ! But he posted the question on a stock S/ stock forum .. so need to make sure nobody fails fuel check
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