Pumping gas.... good things to know
11-13-2007, 03:41 PM
#1
Registered User
Thread Starter
Join Date: Aug 2005
Location: South Bay
Posts: 1,925
Likes: 0
Received 0 Likes
on
0 Posts
Pumping gas.... good things to know
Pumping gas.... good things to know.
This is from a friend and he knows !!!!
I've been in the petroleum pipeline business for about 31 years,
currently working for the Kinder-Morgan Pipeline here in
San Jose, CA. We deliver about 4 million gallons in a 24-hour period
from the pipe line; one day it's diesel, the next day it's jet fuel and
gasoline. We have 34 storage tanks here with a total capacity of
16,800,000 gallons.
Here are some tricks to help you get your money's worth:
1. Fill up your car or truck in the morning when the temperature
is still cool. Remember that all service stations have their storage
tanks buried below ground; and the colder the ground, the denser
the gasoline. When it gets warmer gasoline expands, so if you're
filling up in the afternoon or in the evening, what should be a gallon
is not exactly a gallon. In the petroleum business, the specific gravity
and temperature of the fuel (gasoline,diesel, jet fuel, ethanol and other
petroleum products) are significant. Every truckload that we load is
temperature-compensated so that the indicated gallon gage is actually
the amount pumped. A one-degree rise in temperature is a big deal for
businesses, but service stations don't have temperature compensation
at their pumps.
2. If a tanker truck is filling the station's tank at the time you want to
buy gas, do not fill up; most likely dirt and sludge in the tank is being
stirred up when gas is being delivered, and you might be transferring
that dirt from the bottom of their tank into your car's t ank.
3. Fill up when your gas tank is half-full (or half-empty), because the
more gas you have in your tank the less air there is and gasoline
evaporates rapidly, especially when it's warm. (Gasoline storage tanks
have an internal floating 'roof'membrane to act as a barrier between
the gas and the atmosphere, thereby minimizing evaporation.)
4. If you look at the trigger you'll see that it has three delivery settings:
slow, medium and high. When you're filling up do not squeeze the trigger
of the nozzle to the high setting. You should be pumping at the slow setting,
thereby minimizing vapors created while you are pumping.
Hoses at the pump are corrugated; the corrugations act as a return path
for vapor recovery from gas that already has been metered. If you are
pumping at the high setting, the agitated gasoline contains more vapor,
which is being sucked back into the underground tank, so you're getting
less gas for your money. Hope this will help ease your 'pain at the pump'
PASS THIS ON- so that others may know too.
This is from a friend and he knows !!!!
I've been in the petroleum pipeline business for about 31 years,
currently working for the Kinder-Morgan Pipeline here in
San Jose, CA. We deliver about 4 million gallons in a 24-hour period
from the pipe line; one day it's diesel, the next day it's jet fuel and
gasoline. We have 34 storage tanks here with a total capacity of
16,800,000 gallons.
Here are some tricks to help you get your money's worth:
1. Fill up your car or truck in the morning when the temperature
is still cool. Remember that all service stations have their storage
tanks buried below ground; and the colder the ground, the denser
the gasoline. When it gets warmer gasoline expands, so if you're
filling up in the afternoon or in the evening, what should be a gallon
is not exactly a gallon. In the petroleum business, the specific gravity
and temperature of the fuel (gasoline,diesel, jet fuel, ethanol and other
petroleum products) are significant. Every truckload that we load is
temperature-compensated so that the indicated gallon gage is actually
the amount pumped. A one-degree rise in temperature is a big deal for
businesses, but service stations don't have temperature compensation
at their pumps.
2. If a tanker truck is filling the station's tank at the time you want to
buy gas, do not fill up; most likely dirt and sludge in the tank is being
stirred up when gas is being delivered, and you might be transferring
that dirt from the bottom of their tank into your car's t ank.
3. Fill up when your gas tank is half-full (or half-empty), because the
more gas you have in your tank the less air there is and gasoline
evaporates rapidly, especially when it's warm. (Gasoline storage tanks
have an internal floating 'roof'membrane to act as a barrier between
the gas and the atmosphere, thereby minimizing evaporation.)
4. If you look at the trigger you'll see that it has three delivery settings:
slow, medium and high. When you're filling up do not squeeze the trigger
of the nozzle to the high setting. You should be pumping at the slow setting,
thereby minimizing vapors created while you are pumping.
Hoses at the pump are corrugated; the corrugations act as a return path
for vapor recovery from gas that already has been metered. If you are
pumping at the high setting, the agitated gasoline contains more vapor,
which is being sucked back into the underground tank, so you're getting
less gas for your money. Hope this will help ease your 'pain at the pump'
PASS THIS ON- so that others may know too.
very smart. thanks for the info!
11-13-2007, 04:30 PM
#5
Nice info. Another thing Ive heard is that when the pump automatically clicks when the tank is full, the remaining gas in the line is siphoned back (this is gas you already payed for). Not sure if this is true or not.
