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What octane gas do you use for your Tundra?

Discussion in 'Performance and Tuning' started by tundrathr0w, Jun 22, 2018.

  1. Sep 19, 2018 at 4:33 AM
    #181
    Professional Hand Model

    Professional Hand Model Fred Brookes

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    Let me know what you find out. My 02’ gets maybe 12-13 regular driving. I don’t do much highway driving so maybe thats why? She might need a long highway trip to burn off the old dust.
     
  2. Sep 19, 2018 at 4:42 AM
    #182
    Michael Tregre

    Michael Tregre New Member

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    People here are confusing octane # with fuel/ethanal #s....
     
    sprtbkr likes this.
  3. Sep 19, 2018 at 4:47 AM
    #183
    Michael Tregre

    Michael Tregre New Member

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    Its funny when I see a "professional" make a comment thats absolutely made from a misunderstood point of view. For some reason he thinks or has been taught that octane rating equates to % of fuel/ethanol.
     
  4. Sep 19, 2018 at 4:58 AM
    #184
    Professional Hand Model

    Professional Hand Model Fred Brookes

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    This is my understanding as well.

    Technically, one could have ‘93 Octane’ levels in the crappiest gas (high ethanol) and you get crap.

    Or, you could have ‘87 Octane’ in super high end (low ethanol) gas and you have no problem.
     
  5. Sep 26, 2018 at 8:51 AM
    #185
    WrigglingWilly

    WrigglingWilly New Member

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    Another 85 octane mileage post. This was in town driving, just caught all the green lights.

    20180925_144746.jpg
     
  6. Sep 26, 2018 at 9:01 AM
    #186
    WrigglingWilly

    WrigglingWilly New Member

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    Does anybody else routinely get 20 mpg plus? I feel these 13 mpg people must be riding hard. You need to drive these as you would a 1981 Buick Electra Estate Wagon. Same "light foot or else you spend too much on gas" way of thinking. The only difference is something actually happens when you juice the Tundra.:turtleride:
     
    Joe Dirt likes this.
  7. Sep 26, 2018 at 9:02 AM
    #187
    Tiamat

    Tiamat New Member

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    87 the truck run fine. The tailpipe get dirty the oil grt dirt quickly. 93 octaine slightly smoother but the difference is that the tail pipe stays super clean and my oil stays like new for 2500 miles then slowly starts to get honey color. With 87 after two taks oil starts to get dirty.
     
    OBXTundra likes this.
  8. Sep 26, 2018 at 9:02 AM
    #188
    sprtbkr

    sprtbkr Average Member

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    what is your tank average and overall average mpg? 13-14 mpg is what I get around town, on average, driving normally. 10 is what I get with a lead foot.
     
    WrigglingWilly likes this.
  9. Sep 26, 2018 at 9:11 AM
    #189
    WrigglingWilly

    WrigglingWilly New Member

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    Depending on traffic, and my periodic leadfooting, I average between 16(sitting in traffic, what can I do?) to 20+(no traffic). If I hit bad delays, which is often, my numbers fall terribly. The speed I travel is between 35 and 55. The ground is very flat by Denver, so I can coax the engine to barely above idle speed for most commutes. 400 pounds in the bed make zero diff on mileage it seems.
     
  10. Sep 26, 2018 at 9:13 AM
    #190
    WrigglingWilly

    WrigglingWilly New Member

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    This is how you do it!
     
  11. Sep 26, 2018 at 9:47 AM
    #191
    speckmon

    speckmon Pow Pow please

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    91 from Costco :D
     
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  12. Feb 7, 2019 at 2:14 PM
    #192
    Jman245

    Jman245 Just moving about my way.

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    Me too! But would the 87 octane ethanol free gas be better?
     
    Joe Dirt likes this.
  13. Feb 7, 2019 at 2:21 PM
    #193
    Rex Kramer

    Rex Kramer Owner of two 2 door Tundra trucks

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    I use all 3 grades available in my area, and I spike it with Sea Foam from time to time.
     
  14. Feb 7, 2019 at 2:23 PM
    #194
    marlin39a

    marlin39a I’m a dumbass.

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    My 2019 SR5, 5.7, runs great on 87.
     
  15. Feb 12, 2019 at 4:57 AM
    #195
    marlin39a

    marlin39a I’m a dumbass.

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    I got 16.3 mpg on my last tank. I'm in rural Arizona. I imagine a trip to Phoenix will knock that way down.
     
  16. Feb 12, 2019 at 5:02 AM
    #196
    coreyk85

    coreyk85 2019 Tundra Limited Cement

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  17. Feb 12, 2019 at 7:20 AM
    #197
    doggiecareman

    doggiecareman YOLO / Best to do it with a Toyota

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    When it's 10 to 15 cents more than 87 for 91 to 93 than I go with the higher octane. We have places out here that charge as much as 1.00 extra a gallon for high test and that is highway robbery imo.
     
  18. Feb 23, 2019 at 8:09 AM
    #198
    Yodder J

    Yodder J New Member

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    My understanding is that 85 octane fuel is for higher altitudes. I grew up in Colorado and the low grade was 85, mid grade was 87 and high grade was 89. The reason all these grades are lower is because of the higher altitude. I no longer live in Colorado, I'm in Arkansas, and the grades are 87 low grade and 91 high grade. Many gas stations don't offer a mid grade but I think mid grade here is 89.

    Just my 2 cents...
     
    Last edited: Feb 23, 2019
    doggiecareman likes this.
  19. Mar 3, 2019 at 6:56 AM
    #199
    Steelyhead

    Steelyhead 2016 Tundra TRD

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    The manual says 87, I’m curious why only 87. I’ve always used premium in full my vehicles? Any explanation?
     
  20. Mar 3, 2019 at 7:00 AM
    #200
    alpinepro4

    alpinepro4 New Member

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    91 Octane, I DAP tune my truck, runs better off 91. Every now and then I will put in Ethanol free gas. Really runs well off that stuff.
     
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  21. Mar 3, 2019 at 7:11 AM
    #201
    Razorwyre

    Razorwyre New Member

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  22. Mar 3, 2019 at 7:35 AM
    #202
    Yodder J

    Yodder J New Member

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    91 octane or higher is for high compression engines, aka hi performance engines. If you’re vehicle is does not have a high compression engine, it’s ineffective to put higher octane gas in it, that’s my understanding...
     
  23. Mar 8, 2019 at 5:27 PM
    #203
    YeeYeeTundra

    YeeYeeTundra Earl Dibbles III incarnate

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    I realize I'm late to the party but... I wonder if injection should be the concern when octane is considered. The fact that Toyota was not a strictly direct injection engine (port or a combo is my understanding) made it another plus/selling point. Both my other vehicles (direct injection) recommend 91+ octane, but that didn't stop the valves in my car from becoming carbon clogged to the point of needed pulled and cleaned.

    The service, which service dept. estimated cost was about $900, happened after about 100k miles. (Heard of it happening to other much sooner). How much more did I spend on premium gas to just have my valves clogged anyway!

    I try to buy Costco gas as I hear it's cleaner, but forget paying more for gas when it doesn't recommend it. Even when I followed the manufacturer's rules I got hit with the inevitable repair. Nice doing business with you "peoples car"!
     
  24. Mar 9, 2019 at 6:59 AM
    #204
    Yodder J

    Yodder J New Member

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    I do put no ethanol gas in when I can
     
  25. Mar 24, 2019 at 11:55 AM
    #205
    Rob's Inferno

    Rob's Inferno New Member

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    87 sometimes 89
     
  26. Mar 24, 2019 at 8:05 PM
    #206
    Yodder J

    Yodder J New Member

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    They sell 85 octane in Florida?
     
  27. Mar 24, 2019 at 8:08 PM
    #207
    computeruser6

    computeruser6 Climate heretic

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    I wish that I could get non-ethanol gasoline in California (that isn't racing fuel)...
     
  28. Mar 24, 2019 at 8:19 PM
    #208
    Yodder J

    Yodder J New Member

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    This is a great thread, I should have started reading it from the beginning instead of going to the last page and commenting. I am confused about something and if someone can explain it to me, it'd be much appreciated:

    Why is E85 used in some hi performance engines? In other words, why is fuel with 85% Ethanol (isn't that what E85 is?) so great when regular gas with up to 10% ethanol kind of sucks? I have a flex fuel Tundra but the manual says my gas mileage will decrease on E85, but after reading some posts in this thread, will my truck have more power and run smoother, but just get slightly worse mileage on E85?

    Some guys who have, basically, tuner race cars that are street legal, convert their hi performance cars to E85 instead of dumping costly, high octane racing fuel in the car. Why? Is this the same E85 that I can by at my local gas station for my Tundra, or am I misunderstanding something?

    Thanks for the knowledge
     
  29. Mar 24, 2019 at 8:26 PM
    #209
    Racingjohndeere55

    Racingjohndeere55 Asst. Pot Stirrer

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    87. 15.419 mpg this tank. 10% ethanol
     
  30. Mar 25, 2019 at 4:51 PM
    #210
    Yodder J

    Yodder J New Member

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    Is it methanol that people convert their high performance cars to, not E85?
     

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