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93 ocT "10% ethanol" = 13.5 AFR-WOT

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Old Feb 26, 2008 | 09:22 AM
  #61  
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From: Opelika,AL
Well, I had trouble finding my links fast enough so I went straight to the source for the proof you requested. This reply was from Shell:

Jamie,

Ethanol is added (in-line blending) to the gasoline at the terminal-rack during the loading of the trucks. Since Ethanol has a higher octane level, the octane level of gasoline has been corrected (at refinery), so that the finished product would have the minimum Octane level posted on the pump. For example our Bronze grade, with 10% ethanol (where available), has a minimum octane level of 87.

If you need further clarifications in this regard please feel free to contact us.

Thanks


Mahinda Ranaweera
Technical Services Lubes & Fuels
Shell Canada Products
400 4th Avenue S.W., P.O. Box 100 Station M, Calgary, Alberta T2P 2H5, Canada
Hope that answers your doubts of me,lol.

Last edited by Jack_of_Trades; Feb 26, 2008 at 09:25 AM.
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Old Feb 26, 2008 | 09:39 AM
  #62  
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From: Cut throat, Orlando
^^^^
So Shell then also has 10% or less ethanol in it as well just like Hess does???

So why don't you see it posted at the Shell pump like you do at a Hess gas station? Does Hess fuel contain even more ethanol then Shell?
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Old Feb 26, 2008 | 10:43 AM
  #63  
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From: Opelika,AL
Not all areas have the ethanol mix, the email refers to the "up to 10% ethanol"/gasoline mixtures you see in the designated areas. As the email stated, they add the ethanol into the tanker during fill-up. Its a federal law that if the gas mix contains any ethanol, they are required to have a sticker no smaller than 2" x 2". Every gas company has an ethanol mix. Whether you know it or not, there are only like 3 different gasoline distributors in the US. Most gas stations like HESS or the random convenience stores you see just purchase their gas from one of those name brand distributors. Exxon/Mobil is the biggest. I love seeing people pull into a Mobil instead on an Exoon right down the road because "Mobil's gas is better". I worked for Exxon and there was a Mobil across the street. The gas truck would go fill up our tanks, and then go fill up Mobils tanks with the same truckload,lol.

Last edited by Jack_of_Trades; Feb 26, 2008 at 10:47 AM.
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Old Feb 26, 2008 | 11:10 AM
  #64  
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From: Cut throat, Orlando
^^^


Thanks for the information
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Old Feb 26, 2008 | 12:14 PM
  #65  
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Originally Posted by Jack_of_Trades
I worked for Exxon and there was a Mobil across the street. The gas truck would go fill up our tanks, and then go fill up Mobils tanks with the same truckload,lol.

So they are offloading the bad gas at the bottom of the truck... Hmmm..

So that's how _ _ get's all his damn tanks of bad gas.... Interesting...
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Old Feb 26, 2008 | 12:43 PM
  #66  
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From: Opelika,AL
Look at it however you want. Damn you're negative,lol.

Those tankers are well kept by most companies. The gas companies don't want a big liability from huge inconsistencies so I doubt the bottom of the tank and the top make a DRASTIC difference, especially how bad the gas sloshes around in a tanker on the highway. Its pretty well mixed IMO. The trucks also drive STRAIGHT from the facility to the station so its not like it settles or has time to even separate at all, then it gets poured into the ground into the gas stations tanks. The station has more sediment than the tanker EVER will.

Rule #1, never fill up at a station thats getting a fuel delivery, it will stir up the tank sediment in the underground tanks and you could possibly get a compromised tank of gas. Some stations have a reserve system so they are never DIRECTLY sucking from the large tanks, to counteract such issues.

Last edited by Jack_of_Trades; Feb 26, 2008 at 12:50 PM.
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Old Feb 26, 2008 | 12:49 PM
  #67  
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Although I am not involved with plant processes, this is my understanding of the system. There are only a few major base stock gas suppliers, like Jamie said, Citgo, ExMo for instance. Each major company either develops or purchases their additive package from an additive company. The "no name" stations, Wawa, Sheetz etc., buy the gas that was used to flush the lines and tank of the tanker. This fuel will contain the minimum % of detergents, lubricants etc. mandated by standards. Thats why it is cheaper, but quality suffers.
As far as bad gas from the bottom, I don't know the actual delivery procedure to the in ground tanks. I know a lot of debris/contamination/water is a result of poor tank maintenance and make it a personal habit to buy gas at newer stations.

Back to ethanol.....
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Old Feb 26, 2008 | 12:53 PM
  #68  
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Originally Posted by Jack_of_Trades
Look at it however you want. Damn you're negative,lol.

Those tankers are well kept by most companies. The gas companies don't want a big liability from huge inconsistencies so I doubt the bottom of the tank and the top make a DRASTIC difference, especially how bad the gas sloshes around in a tanker on the highway. Its pretty well mixed IMO. The trucks also drive STRAIGHT from the facility to the station so its not like it settles or has time to even separate at all, then it gets poured into the ground into the gas stations tanks. The station has more sediment than the tanker EVER will.

Rule #1, never fill up at a station thats getting a fuel delivery, it will stir up the tank sediment and you'll get a compromised tank of gas.
Yes, they will not seperate in transit. Storage stability is a big deal and dispersants are a component in the ad pack.

Plus every plant has QC labs monitoring every step of production and release (well they document that they do, implementation is another matter).
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Old Feb 26, 2008 | 03:01 PM
  #69  
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On a similar note, what effect does 15% ether added have, Shell in AZ adds ether from April-September I believe. Noticed it last night fueling in Tucson.
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Old Feb 26, 2008 | 03:14 PM
  #70  
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From: Opelika,AL
Ether? Not ethanol??? Ether is commonly used to prime engines for hard starts so I'm not really sure. I didn't even know Ether was used as a fuel cutter.
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Old Feb 26, 2008 | 03:44 PM
  #71  
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Thats what I said, but def advertised on the fuel pump, 10% ethanol for part year and 15% ether for other part. This is Shell in AZ, Tucson anyway. Ill be keeping AFRs in check.
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Old Feb 26, 2008 | 04:04 PM
  #72  
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I wonder if they are referring to MBTE Methyl Tertiary-Butyl Ether (fuel additive). Thats nothing weird and its what ethanol is slowly replacing. MBTE is actually a little better than ethanol since it has a higher energy level (if memory serves me) so gas mileage isn't compromised.
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Old Feb 26, 2008 | 04:28 PM
  #73  
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There are several compounds with an ether group in them that are/ have been used to oxygenate gasoline. MTBE, ETBE, DIPE....I'll se what I can find out about the generic "ether" sign.
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Old Feb 26, 2008 | 05:44 PM
  #74  
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here in the pacific northwest, one refiner distributes via the same nozzle to all. the only difference is the add pack the tanker driver puts in as he fills up.
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Old Feb 26, 2008 | 05:49 PM
  #75  
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Originally Posted by nothere
here in the pacific northwest, one refiner distributes via the same nozzle to all. the only difference is the add pack the tanker driver puts in as he fills up.
I believe that is the method in many places.
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