Forum Thread

Running on empty: Low gas in the tank can be costly???

xxxHolic 31,589 5,570 March 10, 2016 at 11:03 PM
I'm not sure if this Report was a joke or what?

http://www.consumerreports.org/cr.../index.htm

"If there is dirt in the fuel tank, it could lead to blocking the fuel filter"
What???
I thought fuel pump installed inside the gas tank and the pump picks up the fuel at the lowest part of the tank.
If there is a lot of dirt and debris, fuel pump will pick up them first because the pump is at the lowest part of the tank. So why it's matter if the gas tank has 2 gallons left?

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Joined Sep 2005
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#2
a lot of dirt and debris is stirred up and "floats" because modern fuel injection systems are a loop and not a one way system as in the carburetor days. The return line, under pressure, causes things to remain in suspension instead of settling out as much as in the past.
Since there is more likely to be some that also just floats naturally, leaving only a little gas in the tank will actually bring more possible contaminants into contact with the pump and potentially be pumped through the filter.

Also, modern fuel pumps and regulators are cooled by the fuel around them and running low fuel quantities can cause an overheating of the pump and premature wear and failure.

Finally, modern fuel systems are terrible air pumps and you can cause quite a bit of damage to a fuel pump if it sucks air and also cause some pretty bad priming problems if you suck air into the fuel lines. Running higher volumes of fuel can prevent this from happening.
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all tech support threads will now be answered with possibly random and false information.
This is due to the retardedness of posters and answering posters in general.
thank you, have a nice day.
Joined Mar 2009
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#3
Quote from R1Budha View Post :
a lot of dirt and debris is stirred up and "floats" because modern fuel injection systems are a loop and not a one way system as in the carburetor days. The return line, under pressure, causes things to remain in suspension instead of settling out as much as in the past.
Since there is more likely to be some that also just floats naturally, leaving only a little gas in the tank will actually bring more possible contaminants into contact with the pump and potentially be pumped through the filter.

Also, modern fuel pumps and regulators are cooled by the fuel around them and running low fuel quantities can cause an overheating of the pump and premature wear and failure.

Finally, modern fuel systems are terrible air pumps and you can cause quite a bit of damage to a fuel pump if it sucks air and also cause some pretty bad priming problems if you suck air into the fuel lines. Running higher volumes of fuel can prevent this from happening.
Iagree
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Joined Dec 2005
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#4
Quote from xxxHolic View Post :
I'm not sure if this Report was a joke or what?

http://www.consumerreports.org/cr.../index.htm

"If there is dirt in the fuel tank, it could lead to blocking the fuel filter"
What???
I thought fuel pump installed inside the gas tank and the pump picks up the fuel at the lowest part of the tank.
If there is a lot of dirt and debris, fuel pump will pick up them first because the pump is at the lowest part of the tank. So why it's matter if the gas tank has 2 gallons left?
2011? are you driving a model t?
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Quote from w3kn View Post :
What a shitty thread.
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#5
If a Prius,Yes.
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#6
2003 f250. Run it low all the time. Only fill up when the light comes on. Installed Fuel pump last year. 2 others I know had pumps last year as did my dad recently. 2000-2003. I'll agree fuel keeps pump cool but every vehicle I've owned I always ran low. My Chrysler laser use to starve when low fuel taking a left turn hard.

I'll call bullshit and blame ethanol !
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#7
Only if you have some crappy gas stations and a really old car. Otherwise your tank is pretty darn clean.
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#8
Most modern cars have pumps in a "well" of sorts in the tank - you only risk starving it of gas if you run it VERY low.
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#9
Maybe it is me, but I almost always fill up when convenient once the the tank gets down to 1/4 to a 1/3 full. Don't think I have had the fuel light come on more than a half dozen or so times over the years mostly from me not realizing how low I was. Barring being on a long trip in remote areas I really do not understand why people would push their fuel level to near empty anyway.

You are not saving anything by doing so (you will spend whatever dollars required to travel whatever miles you go annually). Maybe it cuts down your number of fill ups a few times over the course of the year, but I hardly see why reducing the number of times you pull into a gas station would really matter to anyone.
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#10
When you run on empty condensation in your gas take is also a bigger problem.
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#11
Quote from YanksIn2009 View Post :
Maybe it is me, but I almost always fill up when convenient once the the tank gets down to 1/4 to a 1/3 full. Don't think I have had the fuel light come on more than a half dozen or so times over the years mostly from me not realizing how low I was. Barring being on a long trip in remote areas I really do not understand why people would push their fuel level to near empty anyway.

You are not saving anything by doing so (you will spend whatever dollars required to travel whatever miles you go annually). Maybe it cuts down your number of fill ups a few times over the course of the year, but I hardly see why reducing the number of times you pull into a gas station would really matter to anyone.
gas 1.39 to 1.99 the past 2 months. easy to add

if someone drives 2 days a week, why wouldn't they wait.
thursday last week was 1.99, now it's 1.67
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for those that hate spelling mistakes www.walmarts.comCool

bulb save money by checking your insurance every 2 years (and not every 20)
#12
If you think you can predict the oil market, you could make a lot more money trading futures than running your car down to E waiting for the price to drop again Smilie
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#13
last time I filled up I paid $0.98/gal
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#14
Quote from stufine View Post :
gas 1.39 to 1.99 the past 2 months. easy to add

if someone drives 2 days a week, why wouldn't they wait.
thursday last week was 1.99, now it's 1.67
And if the price increases you pay more. May as well bet on oil futures.

Driving little and "saving" what?...1-2 dollars over what it would cost if you filled at 1/4 a tank once every few weeks(?) then on the hope that the gas price declines all while risking running empty and getting stranded some place hardly seems like a worthwhile strategy to me, but to each his own.
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#15
definitely to each his own.
if "I" fill up at 1.39 I save $18.60 compared to 1.99.
If I ran low last week and waited until today to fill up I save $9.92

With the games they play it's pretty easy to know if it's going up or down.
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