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  1. #1
    - STOCK ish - Sarge91's Avatar
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    What could happen?

    Well its a gas question, now i would rather get real answers to this 1, if i use Mid grade gas, will it f up my ls1? I have had a couple of tanks of it, and there isn't any dings or rattles, i would rather use Premium, but sometimes Mr. Wallet doesn't agree. Thanks

  2. #2
    Member slpcamaro's Avatar
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    98 ss camaro

    at about $1.30 per tank difference your willing to risk your motor, need I say more?

  3. #3
    - STOCK ish - Sarge91's Avatar
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    What am i risking?

  4. #4
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    Quote Originally Posted by Sarge91 View Post
    What am i risking?
    nothing..its just better for your engine in the long run..........better performance and gas milage........it is worth the extra $$$ you pay

  5. #5
    Member txz28's Avatar
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    dirty aka white
    2000 Z

    i ran reg low grade for 4 yrs and no problems other then lost power but then again i am runnin a bone stock set up

  6. #6
    Veteran Firebirdjones's Avatar
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    The computer is pretty good about pulling timing when detonation is present before it even becomes audible,,,,so chances are you wouldn't hear it anyway....unless it's severe.

    Problem is though,,,,with the computer pulling timing it affects mileage to an extent, performance suffers a bit as well.

    If it persists I believe the computer will resort to the lower timing table which in both of my cars is about 6-8 degrees less timing accross the board,,,thats pretty drastic.

    For the slight amount of difference in money I personally prefer high test. I've been running 94 octane in most everything for the better part of 30 years. You get used to the price and adjust accordingly.

  7. #7
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by SpeedAddict38 View Post
    nothing..
    I disagree.
    Knocking (detonation) can ruin a motor quick.


    Spend the money for premium.

  8. #8
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
    2000 SS Black M6

    i think it depends on what youre running, if its a stock motor id think youd be fine. Ive heard that under 11 to 1 compression you dont have to worry about detonation.

    My car has never seen premium to my knowledge, but I do get an extra 2-3 mph using midgrade over regular.

  9. #9
    Member txz28's Avatar
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    dirty aka white
    2000 Z

    Quote Originally Posted by Mr. Luos View Post
    I disagree.
    Knocking (detonation) can ruin a motor quick.


    Spend the money for premium.
    but Luos your wastin your money in Co you dont get a true occatin split with that gas bc all the corn base thats in it!! another reason why the highest pump gas you can get there is ony 90 or 91 to where as down here in TX I can get all the way up to 97-99 some places and its a true split in the gas

  10. #10
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Spikito View Post
    i think it depends on what youre running, if its a stock motor id think youd be fine. Ive heard that under 11 to 1 compression you dont have to worry about detonation.
    The LS1 (10.1:1) WILL knock on midgrade at WOT.

    If you run anything under premium with 11:1 it will knock as well.


    Quote Originally Posted by txz28 View Post
    but Luos your wastin your money in Co you dont get a true occatin split with that gas bc all the corn base thats in it!! another reason why the highest pump gas you can get there is ony 90 or 91 to where as down here in TX I can get all the way up to 97-99 some places and its a true split in the gas
    While this might be true....I have personally seen a stock internal LSx ping running our mid-grade. It pulled 10 degrees of timing at WOT from 3400RPM on on a dyno.





    In short....spend the extra $1-2 a tank and put premium in it. Worth it!

  11. #11
    Just me Y2KPewterSS's Avatar
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    Pewter metallic
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    Quote Originally Posted by konigandy6 View Post
    I'd rather be bi than full homo!!!!

  12. #12
    LSX whore allbaugh_04's Avatar
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    if you need to save a 1 or 2 per fill up then cut back on the damn cheez burgers

  13. #13
    Member txz28's Avatar
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    dirty aka white
    2000 Z

    Quote Originally Posted by allbaugh_04 View Post
    if you need to save a 1 or 2 per fill up then cut back on the damn cheez burgers
    lol

  14. #14
    Desert Boat Guy SouthernBornThriller's Avatar
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    Quote Originally Posted by allbaugh_04 View Post
    if you need to save a 1 or 2 per fill up then cut back on the damn cheez burgers


    That's exactly what I did when I bought mine haha..

  15. #15
    Member OneslowZ28's Avatar
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    Spend the extra $$ OE put it in their manual for a reason.

  16. #16
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
    2000 SS Black M6

    Around here theres a 15 cent spread in gas grades, today was 3.69 for regular. 3.84 for mid and 3.99 for premium.

    I used to run mid, the difference in gas mileage made up for the price increase. The extra distance i covered over the course of a tank was more than i would have gotten with the extra gas.

    I know when im running regular the motor doesnt sound happy over 4k rpms, but no serious knocking or anything. I think ill use premium next time and try it out.

  17. #17
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Spikito View Post
    Around here theres a 15 cent spread in gas grades, today was 3.69 for regular. 3.84 for mid and 3.99 for premium.

    I used to run mid, the difference in gas mileage made up for the price increase. The extra distance i covered over the course of a tank was more than i would have gotten with the extra gas.

    I know when im running regular the motor doesnt sound happy over 4k rpms, but no serious knocking or anything. I think ill use premium next time and try it out.
    You still have the 3.8 car?
    I would think that should run fine on mid-grade. Less compression.


    Here is it....
    $3.85
    $3.95
    $4.05

  18. #18
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    I disagree.
    Knocking (detonation) can ruin a motor quick.


    Spend the money for premium.
    I have had 4 Camaros and this is the first one I have run only 93 in. The other three Camaros I run 87 and had zero engine problems.

  19. #19
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by SpeedAddict38 View Post
    I have had 4 Camaros and this is the first one I have run only 93 in. The other three Camaros I run 87 and had zero engine problems.
    Were they LS1's?

  20. #20
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    Were they LS1's?
    no, but it was reccomended to run 93

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