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  1. 07-24-2008, 02:26 PM #1
    98tranny
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    1998 Trans Am

    Premium Fuel; run it or not?

    So how many people run premium fuel in their LS? Just wondering if i should or not.
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  2. 07-24-2008, 02:32 PM #2
    Mr. Luos
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    91 or better. Whatever your premium is. ALL the time.

    Worth the 20-25 cents more a gallon to keep your motor from pinging.
    Last edited by Mr. Luos; 07-24-2008 at 02:42 PM.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.
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  3. 07-24-2008, 02:36 PM #3
    2001NBMZ28
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    I've always run 93, only what, .10/gal over 91? Run what the owners manual says - probably either but performance will be diminished some with the lower octane.
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  4. 07-24-2008, 04:12 PM #4
    StuntmanMike
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    '00 Formy A4

    I've never run anything but premium. The price difference over 87 is only .20, that's a small price to pay for peace of mind.
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  5. 07-24-2008, 04:18 PM #5
    Hot Black Trans-Am
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    2001 Trans-Am 13 F-XT

    If you don't run premium we're going to take your T/A away.
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  6. 07-24-2008, 04:42 PM #6
    Hi-Po
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    Run premium. Always. 94 octane is all over around my parts. But when they have 87 , 89 , 93, and 94..... and 94 is 12 to 15 cents more for one octane. Screw that.
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  7. 07-24-2008, 08:21 PM #7
    WS6ICK2K
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    Metallic Blue
    2000 Trans Am WS6

    Premium
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  8. 07-24-2008, 08:24 PM #8
    Orcus79
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    I run mid grade and not by choice. Gas has been around 1.33/L or about 5.32/Gal before currency conversion. And thats for Regular. Thats a big hit on the pocket book.
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  9. 07-24-2008, 09:02 PM #9
    JoshieDoom
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    Premium with 2 cycle oil
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  10. 07-24-2008, 09:04 PM #10
    BirdFlewLS1
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    midnight Blue
    '99 Trans Am ws7

    104 octane....better known as, Jet fuel...5.50 a gallon here.
    and it smells delish,
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  11. 07-24-2008, 10:40 PM #11
    JoshieDoom
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    79 T/A -91 Firebird
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    Will running 104 ruin a stock ls1??

    sorrry to thread jack
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  12. 07-25-2008, 01:33 AM #12
    KING Z28 HAWK
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    My city sucks ass 91 is the best around here but I'd like some jet juice!
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  13. 07-25-2008, 06:17 AM #13
    BirdFlewLS1
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    midnight Blue
    '99 Trans Am ws7

    I dont know if it will ruen it...just run better i think..but dont get me wrong, i dont know mines not stock. and if it did ruin it....MORE MODS
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  14. 07-25-2008, 06:19 AM #14
    Mr. Luos
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    Quote Originally Posted by JoshieDoom View Post
    Will running 104 ruin a stock ls1??

    sorrry to thread jack
    No.

    And unless you bump timing it is a waste of money.
    I wouldn't see a gain with race fuel....I don't knock now on pump gas.
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  15. 07-25-2008, 06:30 AM #15
    BirdFlewLS1
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    midnight Blue
    '99 Trans Am ws7

    it smells good
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  16. 07-25-2008, 11:42 AM #16
    JoshieDoom
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    Awesome
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  17. 07-26-2008, 04:42 AM #17
    BlackSS1
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    Quote Originally Posted by 98tranny View Post
    So how many people run premium fuel in their LS? Just wondering if i should or not.
    A lot of people run premium in cars that run great on regular, waste of money. In an LS1, you NEED premium, so pony up
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  18. 07-26-2008, 04:47 AM #18
    Y2K_CAMARO
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    Premium all the way
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  19. 07-26-2008, 06:04 AM #19
    rajiv1998
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    1998 Pontiac Trans Am

    Quote Originally Posted by 98tranny View Post
    So how many people run premium fuel in their LS? Just wondering if i should or not.

    If u can afford the car and mods, should gas really be this big of an issue?? Run 91+
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  20. 07-26-2008, 12:51 PM #20
    CamaroFan71
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    QuickSilverMetallic
    2005 GTO M6

    Quote Originally Posted by JoshieDoom View Post
    Premium with 2 cycle oil
    Whats with the 2 cycle oil??
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