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  #13  
Old 04-15-2011, 09:56 AM
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Re: V8 fill up

A couple of times I took it to the last hash mark on "E" and, on those few occasions, when I filled up I put in a bit more than 23 gallons.

It isn't good to run a tank too low because the fuel keeps the internal fuel pump cool; running too low too often and for too long a duration lets that pump heat up too much and reduces its service life. The reason I ran low on a few occasions was due to driving cross country late at night and many fuel stations were closed.

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  #14  
Old 04-15-2011, 11:04 AM
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Re: V8 fill up

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Originally Posted by Bmwister View Post
A couple of times I took it to the last hash mark on "E" and, on those few occasions, when I filled up I put in a bit more than 23 gallons.

It isn't good to run a tank too low because the fuel keeps the internal fuel pump cool; running too low too often and for too long a duration lets that pump heat up too much and reduces its service life. The reason I ran low on a few occasions was due to driving cross country late at night and many fuel stations were closed.
a friend of mine never has more than 1/4 tank of gas in his car. He just goes and puts a few dollars in to get him to work and back (I know, it's weird ). He has gone through fuel pumps on all of his cars and I keep telling him it is because of heat but he doesn't believe me. I remember replacing a fuel pump in an old 92 taurus SHO I had but not since then, they are pretty reliable. I don't know if the heat thing is true or not but it sure seems like it would be.
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  #15  
Old 04-15-2011, 04:32 PM
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Re: V8 fill up

The WKII when it actually hits E you still have 2+ gallons in the tank. Strange I know, so now I always run mine til it is directly on the E, I hate going before it is needed.
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  #16  
Old 04-15-2011, 07:32 PM
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Re: V8 fill up

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Originally Posted by GC2011 View Post
The WKII when it actually hits E you still have 2+ gallons in the tank. Strange I know, so now I always run mine til it is directly on the E, I hate going before it is needed.
That is true, sometimes. Other times when it is on "E", it is 1 gallon from empty, or 3, or 4, or .5, or etc...
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  #17  
Old 09-15-2015, 12:17 PM
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Re: V8 fill up

I agree with Bmwister. I RARELY run my tank below the 1/4 full mark. and I always fill it up. Especially in the winter, I try to fill up at just below 1/2 tank.

As being someone who has actually run out of gas before (1990 honda civic hatchback, stopped dead at 420 miles in the middle of the night 2 miles from a station, so it got 42 MPG exactly). I do not take pleasure in playing this risky game. And I have also heard about the lack of fuel in the tank damaging the pumps.
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  #18  
Old 09-15-2015, 06:07 PM
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Re: V8 fill up

Yep, 24.6 gallons according to my guide. I never let mine go below 1/4 empty as not only can that heat-damage the fuel pump but there may be impurities at the bottom of the tank that could be picked up. Never have seen the 'E' appear.

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  #19  
Old 09-15-2015, 06:19 PM
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Re: V8 fill up

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Originally Posted by Lightninrod View Post
Yep, 24.6 gallons according to my guide. I never let mine go below 1/4 empty as not only can that heat-damage the fuel pump but there may be impurities at the bottom of the tank that could be picked up. Never have seen the 'E' appear.

Dan
Regarding what I highlighted, does the fuel pickup in the tank float so that it takes fuel off the top? I always, without giving it much thought, figured the pickup was at the bottom of the tank in a fixed position.

Anybody know, for sure, or does it vary among manufacturers?


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  #20  
Old 09-15-2015, 07:22 PM
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Re: V8 fill up

Capacity 24.6 gallons for both V8 and V6
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  #21  
Old 09-15-2015, 07:25 PM
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Re: V8 fill up

i constantly refill with 26+ gallons when my gauge shows DTE low fuel.
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  #22  
Old 09-16-2015, 07:58 PM
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Re: V8 fill up

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Originally Posted by bill_de View Post
Regarding what I highlighted, does the fuel pickup in the tank float so that it takes fuel off the top? I always, without giving it much thought, figured the pickup was at the bottom of the tank in a fixed position.

Anybody know, for sure, or does it vary among manufacturers?


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The pickup is at the bottom of the tank -- it doesn't float. A floating pickup would be prone to air ingestion from slosh.

The argument about picking up sediment or other stuff from the bottom of the tank as a reason not to let it get low is pretty much a myth. If there were any sediment or garbage at the bottom of the tank you're going to pick it up anyway. That's why there are fuel filters.

While it is true that the fuel in the tank can have a cooling effect on the pump, most of the cooling is actually provided by the fuel moving THROUGH the pump rather than the fuel AROUND the pump. Air ingestion, by running the tank either EXTREMELY low or completely out can cause overheating and failure.
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  #23  
Old 09-16-2015, 09:17 PM
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Re: V8 fill up

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Originally Posted by Peter_K View Post
The pickup is at the bottom of the tank -- it doesn't float. A floating pickup would be prone to air ingestion from slosh.

The argument about picking up sediment or other stuff from the bottom of the tank as a reason not to let it get low is pretty much a myth. If there were any sediment or garbage at the bottom of the tank you're going to pick it up anyway. That's why there are fuel filters.

While it is true that the fuel in the tank can have a cooling effect on the pump, most of the cooling is actually provided by the fuel moving THROUGH the pump rather than the fuel AROUND the pump. Air ingestion, by running the tank either EXTREMELY low or completely out can cause overheating and failure.
That is kind of what I thought. I figured if letting the tank run low was a cause of picking up dirt it would have been mentioned in bold print in at least on of the many owners manuals I've read over the years. That caution only seems to appear on the internet.


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  #24  
Old 09-17-2015, 12:28 PM
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Re: V8 fill up

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Originally Posted by 77rednecktruck View Post
a friend of mine never has more than 1/4 tank of gas in his car. He just goes and puts a few dollars in to get him to work and back (I know, it's weird ). He has gone through fuel pumps on all of his cars and I keep telling him it is because of heat but he doesn't believe me. I remember replacing a fuel pump in an old 92 taurus SHO I had but not since then, they are pretty reliable. I don't know if the heat thing is true or not but it sure seems like it would be.
I'm willing to be the reason he had so many failures was because he probably ran out more than a few times with his vehicles.

In college, I constantly was low on fuel because I only put in whatever I had the money for at the time. I never had an issue, but I never ran it dry, either.

There are tons of people that only fill up once they hit the empty mark on the gauge. If the pump overheated due to low fuel level, pump replacement would be at epidemic levels.

Running out is the enemy of fuel pumps, not running low.

Having said that, fueling up between 1/4 and 1/2 a tank means it's unlikely you'll run out, even if you get trapped in a blizzard somewhere.
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