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put 4 gallons of 87 octane in the SS, okay?

This is a discussion on put 4 gallons of 87 octane in the SS, okay? within the General Help forums, part of the LSx Technical Help Section category; i'm in houston and everyone is freaking out about the hurricane so there was only regular gasoline left. i had ...

  1. #1
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    put 4 gallons of 87 octane in the SS, okay?

    i'm in houston and everyone is freaking out about the hurricane so there was only regular gasoline left. i had half a tank full with 93 so all i put in was around 4 gallons of 87 octane since that's all they had. i don't know how gas mixes but could i say i made it a roughly 91 octane mixture? i mean is this gonna be bad to drive on and mess something up?
    1999 Camaro SS 6 Speed

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    C=('.'Q) wultdat's Avatar
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    You will be fine.

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    Yep you'll be fine. Fill up with premium when you get out of dodge.

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    okay cool thanks.

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    Member red99ws6's Avatar
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    actually there is no 91 octane. each gas station has 2 tanks. one with regular and one with premium. if you get mid-grade it is just a mixture of the 2. i didnt know this until i helped build a gas station a few years ago and asked why they were only going to have 2 tanks.

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    Member 98 Stang Killer's Avatar
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    you will be fine the computer will adjust your timing

  7. #7
    Quote Originally Posted by red99ws6 View Post
    actually there is no 91 octane. each gas station has 2 tanks. one with regular and one with premium. if you get mid-grade it is just a mixture of the 2. i didnt know this until i helped build a gas station a few years ago and asked why they were only going to have 2 tanks.
    Ive heard that too.

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    Quote Originally Posted by blackmetal View Post
    Ive heard that too.
    Yeah, it's true. I worked at a gas station, there were two tanks, well 3 if you count the diesel, and one had 87 octane, the other had 93 octane.

  9. #9
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    well actually... 91-93 octane is the same petrol but it just has a higer amount of additives. some modern station will only have two tanks. diesel and unleaded, an a sepreate resevoir for the additives.

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