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Thinking about mid grade octane for my 2012 5.7

Discussion in '2nd Gen Tundras (2007-2013)' started by kittscreeknc, Oct 11, 2019.

  1. Oct 11, 2019 at 7:12 PM
    #1
    kittscreeknc

    kittscreeknc [OP] New Member

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    I've seen comments on the forum regarding 89 octane fuel as opposed to 87 regular unleaded. I'm open to considering running a higher grade if performance and fuel economy are improved. Important to add that I tow a 19' GeoPro travel trailer. Any input would be appreciated.


    Thanks
     
  2. Oct 11, 2019 at 9:01 PM
    #2
    Hbjeff

    Hbjeff New Member

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    I don't see how it will do anything with the stock tune
     
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  3. Oct 11, 2019 at 10:21 PM
    #3
    Red Freighter

    Red Freighter Red Freighter

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    Your trucks is programmed for 87. Save your money.
     
    Black4X2 likes this.
  4. Oct 12, 2019 at 2:35 AM
    #4
    kittscreeknc

    kittscreeknc [OP] New Member

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    Thanks
     
  5. Oct 12, 2019 at 2:36 AM
    #5
    kittscreeknc

    kittscreeknc [OP] New Member

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    Appreciate it
     
  6. Oct 12, 2019 at 6:15 AM
    #6
    SgtNewundies

    SgtNewundies New Member

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    The only time you may want to consider using a higher octane would be if you will be towing for a long distance.
     
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  7. Oct 12, 2019 at 6:16 AM
    #7
    Hbjeff

    Hbjeff New Member

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    Possibly if towing up huge grades. But our motors run so rich I don’t think its 100% needed
     
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  8. Oct 12, 2019 at 6:18 AM
    #8
    kittscreeknc

    kittscreeknc [OP] New Member

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    Thanks, mainly just towing small travel trailer around NC.
     
  9. Oct 12, 2019 at 6:40 AM
    #9
    7.62Tundra

    7.62Tundra Chromeaphilliac

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    Knock sensors adjust timing for low octane fuel.
     
  10. Oct 12, 2019 at 6:56 AM
    #10
    duece292

    duece292 Pennsylvania Hillbilly Deluxe

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    I run 89 almost every tank and can attest to the fact that it won't do a thing for economy or performance. The only reason I run it is because the 89 I get has NO ethanol in it.
     
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  11. Oct 12, 2019 at 11:56 AM
    #11
    Scuba

    Scuba Sober member

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    Except for 2 or 3 tanks, I've almost exclusively ran 91 or 93 in my 2012 5.7 CM since I purchased it 2 years ago this month.
    I read back then about something like 10-15 degrees of timing retard on regular vs premium. It sounds right, but is that harmful over time? Who knows.
    Within the last month or so I've been running regular 87 for cost savings (I'm on disability right now).
    I have not noticed any changes in performance or MPG. I can fill up for $45 vs. $55-$60.
     
  12. Oct 12, 2019 at 2:07 PM
    #12
    kittscreeknc

    kittscreeknc [OP] New Member

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    Yea, unless I hear something relevatory regarding the gas gonna keep going with 87 unleaded
     
  13. Oct 12, 2019 at 3:16 PM
    #13
    Winning8

    Winning8 New Member

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    just rims
    Gas is ridiculous in Cali, I don’t really care about performance, if the gas hit 4.30, I’m going trade in my tundra.
     
  14. Oct 12, 2019 at 3:19 PM
    #14
    AzureNightmare

    AzureNightmare F.N.G. (F*cks Not Given)

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    Same reason I run 91 in mine. It's my only option for ethanol free fuel.
     
  15. Oct 12, 2019 at 7:33 PM
    #15
    Hbjeff

    Hbjeff New Member

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    What you lose in the trade in will eat into your gas savings for a while. Better off just keeping it. Gas will definitely be over $5 per gallon in ca eventually. Gavin Newsom doesn’t want people driving...
     
    Winning8 likes this.

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