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#4500019 - 08/28/17 05:39 AM Single Hose Gas Pumps
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1658
Loc: Crawfordville FL
How much fuel is in that single hose?

Example:
If I buy 93, how much of the last guys 87 am I buying at the 93 price?
I'm running a tune and I want 93, not almost 93.

I can't find a station around here that has discrete hoses for each octane rating anymore.
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#4500023 - 08/28/17 05:57 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
skyactiv Offline


Registered: 03/02/13
Posts: 4397
Loc: The Midwest
I think I read about this once a long time ago and you can expect to get 1/10 of a gallon of the octane the previous customer pumped. My wife and I will use a pump a higher end car or motorcycle pulls away from if given the chance, not that it matters. We also try to use gas stations in better areas. A gas station in a bad or low income part of town removed from interstate travelers is probably selling higher octane gas that has been in the storage tank for many moons.
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#4500024 - 08/28/17 05:59 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
PimTac Online   content


Registered: 03/04/17
Posts: 4303
Loc: Soviet State of Washington
I heard some time back that it's generally a 1/3 to gallon in the hose. It will depend on thehose as well. Some new pumps have a smaller diameter hose from the outside so I am assuming it's smaller inside as well.

The only way to guarantee 93 is to follow someone pumping 93.


Edited by PimTac (08/28/17 06:01 AM)
Edit Reason: Forum doesn't recognize 1/3
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#4500025 - 08/28/17 06:02 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
dblshock Offline


Registered: 04/24/07
Posts: 2655
Loc: WI.
I've stopped twice now at a new KwikTrip in Fon du lac, WI. E091 on a seperate dedicated pump and hose right next to all the others so someones thought this through.
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#4500062 - 08/28/17 07:11 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4050
Loc: North Carolina
Is this really something to worry about? The difference will be completely negligible.

Your 93 tune should not be so close to the ragged edge to where this affects you even slightly.
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#4500067 - 08/28/17 07:18 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
Chris142 Offline


Registered: 06/05/03
Posts: 16822
Loc: Deplorable in apple valley, ca
I have also thought about this. My maveric calls for 93 octain. But only 91 is available here and its watered down with 87 left in the hose.
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#4500105 - 08/28/17 08:11 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
LotI Offline


Registered: 01/01/13
Posts: 1267
Loc: America's Dairyland
I was told that there could be 2-3 gallons in the mixer. There's more than just the hose
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#4500158 - 08/28/17 09:13 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
The more you buy at once, the better the odds you get what you want.

I've always heard between .25-.50 gallons in the hoses and valve assembly.

I've been thinking about bringing a gas can in my truck. I can dump the first gallon in my truck, then the next 5 in the gas can.
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#4500165 - 08/28/17 09:27 AM Re: Single Hose Gas Pumps [Re: Linctex]
Kira Offline


Registered: 08/19/10
Posts: 5242
Loc: Champlain/Hudson Valley
Calculating the volume of a hose = A good math exercise

The volume of the mixer etc. = intel

Fretting the delta in octane = BITOGers OCD = CHARMING

Waiting for a high end car or motorcycle to leave a pump = Something a stalker would be better at doing

"I can dump the first gallon in my truck, then the next 5 in the gas can." = Additional risk by complicating the handling of a dangerous fluid

I say, "Have a good time". The nasty people around me would say, "Get a life". I don't say that to people.

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#4500167 - 08/28/17 09:32 AM Re: Single Hose Gas Pumps [Re: rooflessVW]
AirgunSavant Offline


Registered: 07/22/15
Posts: 3772
Loc: MD
Originally Posted By: rooflessVW
Is this really something to worry about? The difference will be completely negligible.

Your 93 tune should not be so close to the ragged edge to where this affects you even slightly.

Glad you said it smile drama........

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#4500263 - 08/28/17 11:02 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
KGMtech Online   happy


Registered: 10/17/14
Posts: 966
Loc: SW Ontario Canada
The octane per each grade is a MINIMUM, rest assured that if you are paying for 93 min octane, that's what you'll get at a MINIMUM.
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#4500280 - 08/28/17 11:21 AM Re: Single Hose Gas Pumps [Re: rooflessVW]
Lolvoguy Online   sleepy


Registered: 02/06/14
Posts: 2338
Loc: Canada
Originally Posted By: rooflessVW
Is this really something to worry about? The difference will be completely negligible.


This is BITOG. Where everything is worth worrying about!
Coffee
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#4500296 - 08/28/17 11:33 AM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
SHOZ Offline


Registered: 06/28/03
Posts: 5749
Loc: Illinois
So what is the ID of most hoses, 1/2"-5/8" maybe? And 10' of hose?

Pipe Volume Calculator
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#4500314 - 08/28/17 11:55 AM Re: Single Hose Gas Pumps [Re: rooflessVW]
tmorris1 Offline


Registered: 07/15/03
Posts: 2364
Loc: MN
If you are only buying a gallon or 2 for my mower or dirtbike and I am paying for the Premium Non-Oxygenated stuff I don't want to get a gallon of ethanol laced fuel. For me it isn't the octane that I am worried about, but I don't want the ethanol in it.

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#4500423 - 08/28/17 01:49 PM Re: Single Hose Gas Pumps [Re: SilverFusion2010]
Eddie Online   sleepy


Registered: 12/07/03
Posts: 9567
Loc: Florida, Cape Coral
When I was very young, I'd wait till the local gas station was closed and take a gallon can and empty all gas hoses to get gas for my car. I never got a full gallon from the 6 separate pumps. Ed
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