Does new 6.2 require 92 octane?
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Cadillac Escalade and ESV Forum - 2015+ Discussion, Does new 6.2 require 92 octane? in Cadillac Escalade Forums; I don't want to get into "why put cheap gas in a luxury vehicle " argument, just curious if the ...
  1. #1
    sdgc is offline Cadillac Owners Enthusiast
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    Does new 6.2 require 92 octane?

    I don't want to get into "why put cheap gas in a luxury vehicle " argument, just curious if the new 6,2 requires high octane or not. What does it say in your manuals (whoever has one).

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    MoistCabbage's Avatar
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    No it does not.

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    davidaugust111 is offline Cadillac Owners Member
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    Re: Does new 6.2 require 92 octane?

    From the owners manual which you can download here: http://www.cadillac.com/owners/auto-owners-manuals.html

    "Use premium unleaded gasoline
    meeting ASTM specification D4814
    with a posted octane rating of 91 or
    higher. Regular unleaded gasoline
    rated at 87 octane or higher can be
    used, but acceleration and fuel
    economy will be reduced, and an
    audible knocking noise may be
    heard."

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    zerdian1's Avatar
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    SDGC,
    Here are some electronic GM 2015 Cadillac Manuals:

    2015 CADILLAC OWNERS MANUAL, CUE AND GET TO KNOW YOUR 2015 CADILLAC ESCALADE VIDEOS
    MANUALS AND VIDEOS:

    OWNERS MANUAL CADILLAC ESCALADE:
    https://assets.gm.com/manuals/cadill...ade_owners.pdf
    CUE:
    https://assets.gm.com/manuals/cadill...navigation.pdf

    GET TO KNOW MY VEHICLE CADILLAC ESCALADE:
    https://my.cadillac.com/web/portal/k...&make=cadillac

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    GM-4-LIFE's Avatar
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    Re: Does new 6.2 require 92 octane?

    Saving $.20 per gallon isn't worth the degradation in acceleration, smoothness and power to me. I can feel the difference between 87 and 91 in our Escalade.

    Higher compression engines require higher octane fuel.

  7. #6
    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Does new 6.2 require 92 octane?

    Yes it calls for 91 min octane as do all Escalade's since 2007, do you have to run high test, no, but then why did you buy a 400 hp plus truck, like buying a Corvette and putting in the lowest grade fuel and wounding why it doesn't perform great.

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    There is NO difference in how smoothly the engine runs, nor is the power difference anywhere near large enough to feel. Placebo effect. You can't feel much less than a 10% power difference. To think octane makes that much difference is just silly.

    The owners manual and the EPAs website state it doesn't "require" 91. It doesn't require 91.

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    DG2's Avatar
    DG2
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    Quote Originally Posted by MoistCabbage
    There is NO difference in how smoothly the engine runs, nor is the power difference anywhere near large enough to feel. Placebo effect. You can't feel much less than a 10% power difference. To think octane makes that much difference is just silly. The owners manual and the EPAs website state it doesn't "require" 91. It doesn't require 91.
    I've been driving my 6.2 liter 2011 Escalade for three years and 50,000 miles now and I can tell you that there is a BIG difference when using regular gas versus premium . So much so that even my wife noticed the car doesn't run as good whenever (albeit very few times ) I used regular gas. There's a reason why Cadillac recommends you use premium gas with 91 or higher octane.

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    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Does new 6.2 require 92 octane?

    You are 100% WRONG, stop by our dyno and I can show you want difference octane makes, even dropping 5 octane points make a difference in performance. If you can not feel a 10% difference in performance then you are numb, 10% of a 400 hp engine is 40 hp, you can't feel that? Please. This is from page 9-51 of the owners manual

    Recommended Fuel
    "Use premium unleaded gasoline
    meeting ASTM specification D4814
    with a posted octane rating of 91 or
    higher. Regular unleaded gasoline
    rated at 87 octane or higher can be
    used, but acceleration and fuel
    economy will be reduced, and an
    audible knocking noise may be
    heard."
    OneStepAhead likes this.

  11. #10
    sdgc is offline Cadillac Owners Enthusiast
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    Re: Does new 6.2 require 92 octane?

    oh god... what did i start................

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    George C's Avatar
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    Re: Does new 6.2 require 92 octane?

    From what I understand, octane is simply a fuel burn stabilizer which allows fuel to burn when the spark plug fires, and not Pre-ignite from cylinder heat. As we all know, pre-ignition is an engine killer. As a safety feature, GM and others use a octane sensor that will dial down the timing if the engine doesn't sense stable fuel with higher octane. So I don't believe the fuel itself lowers performance, but rather a timing change to protect the engine from lower octane fuels that may cause pre-ignition.

    So, if you want full performance, towing or otherwise, use Premium. If you are simply cruising at interstate speed and want to save a few bucks, regular will work just fine.

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    OneStepAhead is offline Cadillac Owners Enthusiast
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    Re: Does new 6.2 require 92 octane?

    Quote Originally Posted by sdgc View Post
    I don't want to get into "why put cheap gas in a luxury vehicle " argument, just curious if the new 6,2 requires high octane or not. What does it say in your manuals (whoever has one).
    Yes, it says premium recommended when you open the gas lid. I run 93 in mine. I notice Premium means different things at different gas stations and different parts of the USA. Here premium might be 91 or 93. Never seen 92 before. My 2012 didn't say anything about that on the gas cap, maybe the manual did. I always ran 87 or 89 octane in that vehicle, but I also used an 87 octane tune on that vehicle.

    I have a friend that accidentally put 87 octane in his 97 Caddy, can't remember the model. He actually had it towed to the mechanic and drained after he started having problems about a gallon in to the tank. Who knows if the two were related or not, but he thought so. I probably would of just put some octane booster in it and called it a day.

  14. #13
    reels is online now Cadillac Owners Member
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    Re: Does new 6.2 require 92 octane?

    I switch 50/50 in my 2013. I lose 10%mpg on 87 and is not nearly as "Peppy" If the cost difference is more than 10% for the premium, I run the 87 just fine. It is not as fun losing the power...

  15. #14
    Ron Fasola is offline Cadillac Owners Member
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    Re: Does new 6.2 require 92 octane?

    If you want to bore yourself with tech explanations about octane, go to a site called, "Campbellboatowners.org", then go to "Boater Reference", then to "Ron's Ramblings", then to "Octane and Gasoline".

    Basically, as mentioned above, late model cars can sense knock, (which happens when the motor's octane requirement is not being met), and automatically adjust (retard) the ignition advance until the knock ceases. The down side is that retarding the ignition reduces the output of the motor. The wording of the manufacturer's note on octane requirement is telling us that under some circumstances, (like hot weather, heavy load, dry air, etc.), this motor's octane requirement will probably exceed regular or perhaps even mid grade octane gasoline. So when I tow, I fill up with premium gasoline.

  16. #15
    MoistCabbage's Avatar
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    Quote Originally Posted by hcvone
    This is from page 9-51 of the owners manual Recommended Fuel "Use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. Regular unleaded gasoline rated at 87 octane or higher can be used, but acceleration and fuel economy will be reduced, and an audible knocking noise may be heard."
    So to answer the original question... Again...NO THE TRUCK DOES NOT REQUIRE PREMIUM.

    Go ahead and post those dyno results of 4 octane points making a 40 HP difference. I'd love to see them.

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