STD Other Open free fuel?

free fuel?

free fuel?

 
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larsalan
Superturbo

1,272
12-15-2010, 05:50 PM #1
So, I like to buy a few dollars of fuel and check my oil pretty often. I have a cup of change in the car and save quarters for meters. I use the other change to help prepay for a bit of fuel. And nearly every pump goes over the amount that I have paid. Strange, I wonder why they stop like 10-30 cents past the amount I paid. Gas pumps always stop right on.
Seems like if I keep it up I will be making big savings since I just drive off and don't worry about the bit of fuel I stole.
Any insight on this phenomenon?

Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
larsalan
12-15-2010, 05:50 PM #1

So, I like to buy a few dollars of fuel and check my oil pretty often. I have a cup of change in the car and save quarters for meters. I use the other change to help prepay for a bit of fuel. And nearly every pump goes over the amount that I have paid. Strange, I wonder why they stop like 10-30 cents past the amount I paid. Gas pumps always stop right on.
Seems like if I keep it up I will be making big savings since I just drive off and don't worry about the bit of fuel I stole.
Any insight on this phenomenon?


Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'

300D50
Graphite Moderator, ala RBMK

775
12-15-2010, 09:03 PM #2
Erm, watch your next tank be full of water and bugs from the gods of karma?

I've got mixed feelings on this one...

1990 Power Ram 50 V6 SOHC 24V 6g72

I can be wrong, don't take everything I say as verbatim, please fact-check first.
My posts are my personal opinions and thoughts, unless otherwise noted.
300D50
12-15-2010, 09:03 PM #2

Erm, watch your next tank be full of water and bugs from the gods of karma?

I've got mixed feelings on this one...


1990 Power Ram 50 V6 SOHC 24V 6g72

I can be wrong, don't take everything I say as verbatim, please fact-check first.
My posts are my personal opinions and thoughts, unless otherwise noted.

98taco3
K26-2

41
12-16-2010, 05:56 AM #3
Seems the pumps just arent calibrated correctly. I wouldnt be surprised if its the other way around. Couple years back we had a gas station chain caught messing with the pumps. Said it was selling you more fuel than it actually pumped into the tank.
98taco3
12-16-2010, 05:56 AM #3

Seems the pumps just arent calibrated correctly. I wouldnt be surprised if its the other way around. Couple years back we had a gas station chain caught messing with the pumps. Said it was selling you more fuel than it actually pumped into the tank.

ForcedInduction
Banned

3,628
12-16-2010, 08:49 AM #4
Legally, pumps have to flow the paid volume or higher. Big fines if they are found short pumping so stations calibrate the meters slightly high to make up for temperature density, flow bypassing the meter vanes, etc. Thats why people suggest fueling in the morning to get more dense fuel, even though underground tanks stay at a consistent temperature all day.
This post was last modified: 12-16-2010, 08:50 AM by ForcedInduction.
ForcedInduction
12-16-2010, 08:49 AM #4

Legally, pumps have to flow the paid volume or higher. Big fines if they are found short pumping so stations calibrate the meters slightly high to make up for temperature density, flow bypassing the meter vanes, etc. Thats why people suggest fueling in the morning to get more dense fuel, even though underground tanks stay at a consistent temperature all day.

larsalan
Superturbo

1,272
12-16-2010, 09:29 AM #5
maybe it's a small % of large fuel purchases to go over a few cents but, if I get like 30 cents a day that's good for me.
Today the lady may have gotten wise. I ordered 2.24 of fuel and it pumped superduper slow and then stopped at 2.23.

Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
larsalan
12-16-2010, 09:29 AM #5

maybe it's a small % of large fuel purchases to go over a few cents but, if I get like 30 cents a day that's good for me.
Today the lady may have gotten wise. I ordered 2.24 of fuel and it pumped superduper slow and then stopped at 2.23.


Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'

ForcedInduction
Banned

3,628
12-16-2010, 09:40 AM #6
Its also worth noting the flow meters are rated for accuracy at a certain minimum flow rate. So pumping super slow like that pretty much guarantees you get extra fuel since some of the pressure will seep past the gears/vanes.
ForcedInduction
12-16-2010, 09:40 AM #6

Its also worth noting the flow meters are rated for accuracy at a certain minimum flow rate. So pumping super slow like that pretty much guarantees you get extra fuel since some of the pressure will seep past the gears/vanes.

 
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