87 octane only fuel allowed?

Discussion in 'Prime Fuel Economy & EV Range' started by IABoy987, Jun 26, 2020.

  1. IABoy987

    IABoy987 Member

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    Finally reaching point to add fuel. Manual says 87 octane but doesn't say anything about blended, so assume 87+ethanol is big no-no (ethanol dissolves plastics to clog most likely).
    What about a few squirts of Stabil after refuel or is that also no-no or has no effect?

    As an aside:
    Found there is a release lever for fuel door but with warning to wait a minute before removing fuel cap due to tank pressuring blowing out fuel to user.
    And there is an emergency release if your charger plug won't release (I assume if you use the plug lock option),

    And finally, when I read the specifications, I was shocked :eek: to learn traction battery is 351volts. I knew it would be high but never suspected that high!! Always learning something new.....
     
  2. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Read again/more carefully. I think every Toyota made in the last 10 years allows up to 15% ethanol in the fuel supply.
     
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  3. IABoy987

    IABoy987 Member

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    However this is a Prime plug in so the fuel does not run down every week or so, but Prime fuel could remain up to a year if all Prime is used for around the town of less than 25 miles/day. Our old Prius fillups used 87+ every week with no ill effect that we could tell, and was never in shop except for those [email protected]##$% impossible headlight change outs :mad: , oil changes and recalls.
     
  4. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Yep, it's well covered in many other threads. The bottom line is that all the same fuels are fine that version of the car, it has a system to manage fuel aging but it doesn't hurt if you plan 'portions' relative to your actual consumption.
     
  5. Rob43

    Rob43 Senior Member

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    I run 92 or 93 E0 gasoline somewhere between 1/4 to 1/2 a tank as a norm for local driving.

    If I go on a long trip I fill up with cheap/costco 87 E10, then I try to come back home with very little E10 fuel.

    Then I repeat this process...



    Rob43
     
  6. Salamander_King

    Salamander_King Senior Member

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    There are no 87 E0 gas in my area. Until very recent, there were no E0 gas, but last year a newly opened CitGo gas station within 20 miles started carrying 93 E0 gas at pump. I go there to buy E0 pure gas, not for my PRIME, but for my lawnmower, snowblower, generator, and other small engine yard tools.
     
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  7. Rob43

    Rob43 Senior Member

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    Yep, gotta use the "good stuff" in the lawn equipment !



    Rob43
     
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  8. Rmay635703

    Rmay635703 Senior Member

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    Never heard a Prime called that
     
  9. fuzzy1

    fuzzy1 Senior Member

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    Look at the gas cap, it should say how much ethanol content is allowed in this car.

    I thought that it was a federal requirement for all normal consumer vehicles made after some long ago date to be able to tolerate E10. After all, many localities were forced to use E10. And E15 is now approved too.
     
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  10. davecook89t

    davecook89t Senior Member

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    If it's really in there for a year, I would think you would want to use some kind of fuel stabilizer, especially if you are filling up with something other than E0.

    How Long Does Gasoline Last? Solved! | Bob Vila
     
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  11. Rob43

    Rob43 Senior Member

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    Yep.

    *************************

    "Even in proper storage 87 octane gas can start to degrade in 3 months, 93 octane fuel should last closer to 9 months before degradation is noticeable. Keep in mind that 93 octane fuels are still susceptible to octane loss and vapor pressure decreases due to butane evaporation."
    Octane Stability: High Octane vs Low Octane Fuels - Sunoco


    Rob43
     
  12. jerrymildred

    jerrymildred Senior Member

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    See the manual, or (as @fuzzy1 said) just open the fuel door for ethanol answers.
    IMG_2118.jpg


    My tank depressurizes faster than the message can appear on the dash. Also, fyi, IMG_2119.jpg

    You need to reread that. It's an emergency release for the charging port door. Not for the EVSE cable.

    There's always stuff to learn about this car. This one might be too much at one bite, but check out the Weber Auto videos on YouTube.
     
  13. sam spade 2

    sam spade 2 Senior Member

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    It is 87 octane MINIMUM. Nothing wrong with higher octane, just not needed.

    IF you are a person who's driving pattern means that you might not put a whole tankful into it in a YEAR,
    I think I would look for E0 gas (regardless of the octane) AND put in some stabilizer too.

    IF you will go through a tank every 3 months or so, I wouldn't worry about it in the least.

    Neither of those things might be strictly necessary but it won't hurt either.
     
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  14. benagi

    benagi Active Member

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    Here in Utah Costco only sells 85 octane and 91 octane, no mid grade. I’ve been running 85 octane in my prime and also my 2012 Prius V. No problems.
     
  15. sam spade 2

    sam spade 2 Senior Member

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    Are you in a "high elevation" area ?
    It is typical to sell lower octane fuels in the "mountains"......because higher octane is not needed there.
     
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  16. jerrymildred

    jerrymildred Senior Member

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    I think @sam spade 2 has it. I notice when we're in CO that the octane is lower engines need less anti-knock at higher elevations.
     
  17. benagi

    benagi Active Member

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    Yes, we are at 4300 feet. I had already figured that’s why they’re running a lower octane at Costco.
    Curious if anyone is from the Denver area. What octane are they selling there?
     
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  18. fuzzy1

    fuzzy1 Senior Member

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    Is the lower octane specific to Costco? I suspect not, but that it is common to the region.

    I've seen the lower octane in Montana and Wyoming, as well as Utah and Colorado. And it is sold in a few other places too. It seems common at 4000+ feet when far enough away (by old era car fuel ranges) from lower elevations. Though I believe I've seen low octane (maybe 85.5 or 86) down at about 3000 feet too.
     
  19. benagi

    benagi Active Member

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    The problem with the Costco‘s here in Utah is they only have the 85 and the 91 octane. They do not sell a midgrade. All the other gas stations do sell a midgrade. Usually 87 octane.
     
  20. fuzzy1

    fuzzy1 Senior Member

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    I don't recall Costcos in any state (Western U.S. and Canada only, I haven't been to any elsewhere) as selling a midgrade. Just Regular and Premium, at whatever octanes are customary their the particular area/elevation.
     
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