Stumbled on some ethanol-free gas??

Discussion in 'Gen 3 Prius Fuel Economy' started by Mendel Leisk, Jul 18, 2017.

  1. Mendel Leisk

    Mendel Leisk Sand Pounder

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    We last tanked up in Powell River, a little road trip. By the time we got back to Vancouver, 158 km's after fill-up, the display was reading 3.8 liters/100 km. That equates to maybe 4.0~4.1 calculated, or about 57 mpg US.

    upload_2017-7-18_9-57-14.png

    Running a few local errands, it crept back up, to maybe 4.3 displayed. Then we had a couple of decent drives, and I pushed it down to 4.1.

    My wife was out-and-about last night, brought it home, and now with over 500 km's on this tank, it's at 4.0.

    upload_2017-7-18_10-1-16.png

    Now this is eerily low for us, especially with 17" Michelin Pilots, on the the OEM porker rims. I'm thinking either: the car benefited from a good highway run up to Powell River, blew out some carbon or whatever. Or out in the boonies you're more likely to get ethanol-free??

    A little stumped, not complaining too loudly.
     
    #1 Mendel Leisk, Jul 18, 2017
    Last edited: Jul 18, 2017
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  2. FuelMiser

    FuelMiser Senior Member

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    Okay, but what did the ethanol-free cost relative to your normal fuel? I've seen ethanol-free in the southern USA, but at a huge premium in price. It certainly didn't make sense (cents) to use it over the normal E10 fuel. The only purpose is for engines that don't run well on E10. In fact, in the southern USA station I visited, it was marketed as "marine fuel", that is, for boating engines.
     
  3. Mendel Leisk

    Mendel Leisk Sand Pounder

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    The fill-up was at a regular Chevron pump, regular price. I'm just speculating why this tank is so exceptional. I can kinda see rolling back into town at 3.8 displayed, which btw is about the best I've ever seen. And then with a bit of local running around it'll tend to climb, and stay higher. but it's dropping (good in metric). I'm thinking either some carbon blow-out, or sometimes out of the way gas stations will get ethanol free.

    Chevron pumps in town have a sticker that says "maybe contain up to 10% ethanol" and another on the highest octane pump that says "contains no ethanol" or words to that effect. So the only way to ensure ethanol-free is to pony up for their highest octane grade, which is a bit pointless. And as you say: expensive.
     
  4. Tideland Prius

    Tideland Prius Moderator of the North
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    Both? E0 will net you about 2-3 US mpg gain.
     
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  5. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Update: filled up backed in Vancouver, and now about 1/3 of a tank in, the display is around 4.6 liters per 100 km (roughly 51 mpg US). If I drive like Gandhi, I can get it down to 4.5. Slack off at all, and it's 4.7~4.8.

    This is a far cry from the 4.0~4.1 displayed (roughly 87 mpg US) on our last tank, similar conditions. Strange. Maybe I'll try a tank of Shell next, see what happens.
     
  6. Tideland Prius

    Tideland Prius Moderator of the North
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    Did a long drive around town and got 4.1 indicated (traffic was light for Saturday). Now it's up to 4.3 indicated even though I tried to maximise gliding (considering I had to climb a steep hill and I'm running on WRs not the Ecopias :p). I did have A/C running all day too but I doubt I can improve with A/C off so I'll keep the battery and myself cool.
     
  7. Mendel Leisk

    Mendel Leisk Sand Pounder

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    The bulk of out driving on this tank was Sunday, here-and-there in North Van, fairly hilly, with anywhere between 2~4 adults in the car. And Friday, same area, it was actually my son, and then my daughter-in-law driving a fair bit, I cut myself off due to a beery dinner, lol. In short: not ideal hypermiling conditions. And we're on 17" Michelin Pilots (that actually roll pretty easy, aging).

    Still, the "wall" seems definitely higher this tank, say 4.5, vs 4.0 with that last, procured up the coast.

    Researching a little, I'm thinking to let this tank get pretty low, then fill up with 91 octane Shell, which is ethanol free, and I think cheaper than Chevron's 94 octane (also ethanol free). See what happens.

    Just a few minutes of AC use, btw, when it was muggy AND started to rain. But normally once heating season is over, we just vent the cabin with the windows.
     
    #7 Mendel Leisk, Jul 25, 2017
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  8. Mendel Leisk

    Mendel Leisk Sand Pounder

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    I googled Chevron Canada pump image, and have a hunch this is actually one I posted a while back, lol. Maybe in Powell River, in a trance, I went for this pump, lol. I don't think so though:

    [​IMG]
     
  9. fuzzy1

    fuzzy1 Senior Member

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    Do you still have the receipt? It should say.
    If that is all they have at the time, that is what they may put in the tank. Customers get a random freebie. But you can't count on that ahead of time, nor continuing into the future.
     
  10. Mendel Leisk

    Mendel Leisk Sand Pounder

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    I'd shredded the receipt BUT: I'd logged the litres in my mpg log, and paid with plastic, so was able to look up the amount and do the math. It was $1.33 a litre which is regular gas price, and I recall looking at the pump, thinking not that different than vancouver. I've been reading a bit, seeing some comment that small communities ocassionaly (or frequently?) get ethanol-free.

    In the interest of science I don't mind splurging for one high octane, ethanol-free fill up, I'd like to see what it does. Just wish it was possible to get regular ethanol-free, but I guess there's various factors at play.

    It's a little hard to discern in the pic, but I believe it's roughly 20 cents increase (per litre), going from octane 87 to 94. From $1.35 to $1.55, or about 15%.
     
    #10 Mendel Leisk, Jul 26, 2017
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  11. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Castanet • Ethanol-free gas? - View topic

    Specifically, Sept 12 at 9:50 pm, 2012, by Crazy Horse. An excerpt:

    I was getting fuel at a Chevron that did not display the the "may contain up to 10% ethanol" sticker on the pump, so I asked the attendant if there was ethanol in the gas. He said no, but didn't know why. So I contacted the Chevron refinery and was told that the requirement was for an average of 5%, so they add ethanol to all their branded fuel in the metro Vancouver area up to 10% in 87 octane (none in 94). This satisfies the 5% mandate, so they do not have to add ethanol to their fuel outside of metro Vancouver. Chevron supplies somewhere around 30-40% of gasoline in metro Vancouver.

    The current tank (a Vancouver Chevron fill up, with regular) is settling on a displayed 4.9. Tanks before the road trip up the coast were similar. The tank with the Powell River gas came in at displayed 4.1. And this was fill up when the tank was barely to the halfway mark on the gas gauge, 23.327 liters.

    Basically, the difference (calculated) is about 4.9 vs 4.4, a solid 10% difference. 10% drop in mpg, with 10% ethanol? This makes NO sense to me...

    upload_2017-8-1_20-48-56.png
     
    #11 Mendel Leisk, Aug 1, 2017
    Last edited: Aug 1, 2017
  12. Salamander_King

    Salamander_King Senior Member

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    I came across this thread when I was searching "ethanol free" thread to see if anyone using 0% EthOH gas in PRIME, since the gas tend to just sit in the tank for a long time in PRIME. I use ethanol free gas on all of my small engine machines, like chainsaw, weeder, lawn mower, snowblower, pressure washer, etc., etc, but have never used in a car. In US, they are soooo expensive and very hard to find. I found one marine fueling station that sells ethanol free gas around my town. I haven't bought recently so I don't know what the current price is. If the price is reasonable, I may try putting in my PRIME. That is if I ever get my gas tank empty. ;)
     
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  13. Mendel Leisk

    Mendel Leisk Sand Pounder

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    I'm starting to wonder if we hit the ethanol-free jackpot once again. Primarily my wife driving, some longish cross-town drives, and starting it up this afternoon, with about 175 kms on the trip meter (reset at fill up), the fuel economy was indicating 4.1 liters per 100 km. By the time we got from a shopping trip it was 4.2.

    That 4.1 equates to 57.4 mpg (US). Again, that is displayed. But, this is 3rd gen, on Michelin X-Ice, in December.
     
  14. Tideland Prius

    Tideland Prius Moderator of the North
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    I'm sitting at 5.4L/100km :cry:
     
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  15. Mendel Leisk

    Mendel Leisk Sand Pounder

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    On the prairies?

    This is not the norm for us, the numbers been steadily climbing, getting into fall, as you can see from the Fuelly link. Strangely improved so far this tank, has me wondering.
     
    #15 Mendel Leisk, Dec 12, 2017
    Last edited: Dec 12, 2017
  16. fuzzy1

    fuzzy1 Senior Member

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    Same tires, but only 46 mpg (US) (5.1 l/100km) crossing the state yesterday. Eastbound should normally have a bit of tailwind, but a horrendous gusty head/cross-wind climbing up to and across Snoqualmie Pass was burning fuel at a quite abnormal rate. A Prius 'c' was climbing at barely 50 mph with emergency flashers on, either unable to power into the wind or seriously spooked by the rocking gusts.

    These were winds where one doesn't dare pass a tractor-trailer in the adjacent lane in the known crosswind zone. Move over one extra lane.

    And the road was wet from earlier frost and freezing fog, nearly the whole way.
     
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  17. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Ugh, bad conditions.
     
  18. litesong

    litesong Active Member

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    There's a nice cafe/ gas station selling 87 octane, ethanol-free E0 in Easton. Very good gasoline & Carl also makes the meals. Next time I fuel up there, I'm going to eat breakfast.... or lunch.... or dinner. Go to pure-gas.org to find exactly where he is off the freeway.
     
    #18 litesong, Feb 5, 2019
    Last edited: Feb 5, 2019
  19. litesong

    litesong Active Member

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    Go to pure-gas.org to find 87, 90 & 92 octane ethanol free gasoline(E0) in Easton, WA. Talk with Carl, who also cooks the meals for breakfast, lunch & dinner. Tho caught going over two 4000+ foot mountain passes & 2 miles of stop&go traffic, my non-hybrid car still managed 41.5MPG on Carl's 87 octane E0.
     
  20. fuzzy1

    fuzzy1 Senior Member

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    Is this it?:
    upload_2019-2-4_21-43-55.png

    When Warrior in Cle Elum is selling at $2.27/gal today, and Safeway across the street selling at $2.35, I really can't justify paying $3.09 for a mere 3% MPG boost..
     
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