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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. May 13, 2020 at 9:46 PM
    #301
    AZBoatHauler

    AZBoatHauler New Member

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    87. I’ve run a several tanks of premium and there was no perceivable difference in driving or MPG. I’ve run premium in a lot of vehicles (Acura MDX, Lexus GX, Denali XL) but do not see any benefit in doing so with the Tundra.
     
  2. May 13, 2020 at 10:39 PM
    #302
    jptshadow

    jptshadow New Member

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    7/1/2018, 15k miles now
     
  3. Jun 29, 2020 at 4:37 PM
    #303
    Beerghost

    Beerghost New Member

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    Why does my gas cap say flex fuel only?
     
  4. Jun 29, 2020 at 8:41 PM
    #304
    Summydad1

    Summydad1 Half nerd/half redneck

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    93. I am not sure about higher octane=higher power but I do believe 93 octane creates a “smoother” feel. I don’t know a whole lot about engines but I heard a few years ago that 93 was better for bigger V8’s. That came from a Ford racing guy and he seemed credible. I ran 93 in my F150. Being a creature of habit I just stuck with it in the Tundra. I even go so far as to get gas at the same station by my house. Also, my truck told me it likes 93 better.
     
  5. Jun 29, 2020 at 8:57 PM
    #305
    BTBAKER

    BTBAKER ..........

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    Please send a pic if you can. I would be surprised if it said “only”. You have a flex fuel, meaning you can run flex fuel if you want to but I would not run it at all. Stick to regular gasoline. Flex runs dirty. It’s the reason you have 5000 mile oil changes and not 10. Toyota does that because they can’t guarantee you won’t run flex.
     
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  6. Jun 29, 2020 at 10:56 PM
    #306
    sillydadztrksR4momz

    sillydadztrksR4momz New Member

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    I think also it depends on the name brand gas station.
     
  7. Jun 30, 2020 at 4:58 AM
    #307
    Beerghost

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    I drove a tanker gas truck between career changes for about 10 months. I'll say if you're using mid-grade thinking you're getting the middle of the road gas, you're wasting money. Low grade gets low grade dumped in the tanks- simple as that. Premium grade gets pure premium grade dumped in the tanks, simple as that. Now mid grade is mixed based on what the driver blends in his tank and I know for a fact that (most) drivers get lazy after working 70hrs a week every week and they don't want to blend it correctly for many reasons. Mostly to save time. They get paid on how many gallons are dumped in the tanks. NEVER BUY MID-GRADE! I'll never buy low-grade either - dirty stuff. So I experimented with this flex fuel after seeing it at a gas station for the first time, as soon as that shit hit the injectors there was a noticeable difference. I had to hit the pedal harder, felt like a chunky smoothie going through the system. Never again, premium all the way.
    It doesn't depend on the brand of station either. Shell, Conoco, Bp, Exxon, etc all come from the same refinery, same pumps, same gas. Phillips 66 was the only one we had to go across the street to different pumps for - the rumor was it was even lower grade. My father in-law was a shell only guy because its the best gas in the business. He was so disappointed when I told him its coming from the same refinery/tanks. lol
    Gas cap doesn't say "only" - lol.
    @BTBAKER

    tx33VGNLRSCABmNGPIaeoQ.jpg
     
    Last edited: Jun 30, 2020
    BoxersBrew and BTBAKER like this.
  8. Jun 30, 2020 at 4:09 PM
    #308
    YeeYeeTundra

    YeeYeeTundra Earl Dibbles III incarnate

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    @Beerghost - I have nowhere near the experience it sounds like you have, but I've always felt like Sunoco runs best. After filling up at two separate Shells years apart, I got stuck (once) and drove off the highway (once) due to vehicle running like crap or stopping. Different cars. Last placed filled up was shell and once new gas was added, didn't have the problem again. Maybe a fluke, but I avoid Shell gas now (their stores are nice though).

    No experience with FF. Seems unwise.
     
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  9. Jun 30, 2020 at 4:39 PM
    #309
    jwatt

    jwatt New Member

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    Hehehe. I guess you just told everyone what-for, but not why.
     
  10. Jul 3, 2020 at 9:36 PM
    #310
    jptshadow

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    Just curious, why would Flex run dirty?
     
  11. Jul 3, 2020 at 9:45 PM
    #311
    BTBAKER

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