What octane gas do you use with the 1.4L Turbo?
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Thread: What octane gas do you use with the 1.4L Turbo?

  1. #1
    Bob Paris is offline [OP]
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    Apr 2017

    What octane gas do you use with the 1.4L Turbo?

    The "newbie" suggestions recommend using mid-grade 89 octane fuel even though 87 is normal. What do you use and why?

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  3. #2
    Learning about my Cruze
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    Jul 2016
    I have used 93 octane in my 2016 because I have a Trifecta Performance Tune. I am about to switch to 90ish non ethanol fuel since I have a buddy in the fuel business and now have a 275 tank with pump at home. I was told by Trifecta that it would do fine on the 90 octane.

  4. #3
    EricSmit's Avatar
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    Dec 2016
    Farmington Hills, MI
    I'd use the highest octane available. 93 where I am, 91 at altitude.
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  6. #4
    Learning about my Cruze
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    I found I get better economy and performance with premium. It might be anecdotal, but I believe it to be true.
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  7. #5
    3rd Gear Chevy_Country's Avatar
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    Oct 2015
    New England
    I like a very few on here don't prefer premium. I recommend premium because most on here mention how they get better mpg, reduce turbo lag, and a smoother running car.

    I noticed while on premium almost no rough idle, a from 2-3 mpg better, but no diference in turbo lag. So I switched back and run premium with seafoam every other oil change

    Sent from my SM-G930V using Tapatalk
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  8. #6
    Driver's Ed Noiitekk's Avatar
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    Feb 2017
    I use 93 if available, otherwise 91 since not all stations nearby have 93. No real reason honestly but I like to think it nets me a slight increase in efficiency.

  9. #7
    BOOOOST! jsusanka's Avatar
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    Jan 2011
    93 top tier pretty much about 95% of the time

  10. #8
    2nd Gear
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    Aug 2015
    I use 87 (which is the regular fuel over here; there's only a choice between 87, 89, and 91 where I live).

    Never had any issues, save for when the temps are above 100F, then the car becomes really sluggish on the highways or interstates.
    Still have to figure out if higher octane would help or not...
    With 87 octane, the car operates best at temperatures around 60-70F (We don't get a lot of days with temps lower than that here), and performs good to 75F. A noticeable lower performance, but still good at temps of up to 95F, but beyond 95F, and especially 100+F, some serious lagging and weak performance.

    When using BP premium (hi-octane) fuel, I get about 10% better MPG from most other fuels.
    When using Shell premium fuel, I get about 5% better MPG.
    When I use Chevron or Valero regular, I get about 5 to 10% worse MPG .
    Last edited by ProDigit; 04-23-2017 at 11:23 PM.

  11. #9
    Learning about my Cruze
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    May 2015
    93 is a waste in these cars, unless you're tuned or in a very high altitude.

    I'll put in the owners manual recommended 87 until it gets into Summer (over 80F), when I'll switch to 89/91 depending on the price. I won't bother with cruddy gas brands either... Shell, Sunoco or Marathon are the only ones I'll bother with.

    My MPG remains a constant 35MPG (mixed) and my acceleration/lag returns to acceptable levels in the hotter temps with a bit higher octane.
    Last edited by shockz; 04-23-2017 at 11:21 PM.

  12. #10
    Group B Rally Champion

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    Dec 2014
    Without checking my memory, I think the model year matters. 2011-2013 wasn't too happy with 87 when things got warm. I think 2014 on was fine. There was a recall for 2011-2013 with automatic transmissions that might have fixed this.
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