Underground heating oil tank


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Old 01-25-13, 04:11 PM
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Underground heating oil tank

I am taking care of a house and discovered that almost 100 gallons are unreachable in the underground tank, after running out of fuel oil when I thought there was plenty. Any suggestions on how to get to the oil in the bottom of the tank?
 
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Old 01-25-13, 05:10 PM
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How did you determine the amount of oil left in the tank? The suction pipe usually ends a few inches above the bottom of the tank. Below that, the oil is not recoverable unless the tank is pulled.

Best to add oil to the tank.
 
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Old 01-25-13, 06:07 PM
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Angry

The tank has a measured stick that is inserted to the bottom. When the furnace stopped, I used the "stick" and it was showing roughly 100 gallons left. I called the oil company and they delivered 100 gallons, at 3.80 per , and the furnace roared back to life. Could be that a part of the pipe broke off...I don't know. It seems to be operating correctly with no issues since the fill up.
 
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Old 01-25-13, 06:11 PM
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Could you use ball bearings or something similar to raise the level of the oil?
 
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Old 01-25-13, 06:29 PM
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It is probably a good thing the dip tube does not go to the bottom.

More than likely there is a lot of water sitting in there.


.
 
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Old 01-26-13, 06:45 PM
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Normally the suction line goes to 2-4" from the bottom of the tank. Without knowing how deep yours is, the "100 gallons" is pretty much meaningless. Four inches in a 2000 gallon tank is going to leave a lot more oil than four inches in a 250 gallon tank. The only way to insert the suction line deeper into the tank is to dig up the top of the tank & install a new, longer suction tube.
 
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Old 01-26-13, 06:53 PM
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It is probably a good thing the dip tube does not go to the bottom.
More than likely there is a lot of water sitting in there.
And sediment. The tank simply ran empty (below the level of the suction line) - the only realistic solution is to add more oil, which you did.

No, part of the pipe didn't break off. You simply ran out of oil.
 
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Old 01-27-13, 06:02 AM
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In addition, you may have been using a service station dip stick, which was calibrated for a 5000 gallon tank, not yours. You'll have to do calculations to determine the amount of fuel based on the size of the tank, circumference, length and depth of oil.
 
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Old 01-27-13, 09:33 AM
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Something else you might try. Take another measurement after the 100 gallon delivery. If you're showing double on the stick, you know how much is at the bottom.

I'm betting on that stick being from a service station too.
 
 

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