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Tips for Handling Old Residential Heating Oil - No. 2 Home Heating Oil Shelf Life InspectAPedia®  -

• How long can I store No. 2 home heating oil or diesel fuel?
• Can I use old heating oil to heat my home?
• What should be done with old heating oil found in old or abandoned oil tanks?

This document explains the shelf life or storage life of home heating oil (No. 2 home heating oil) and discusses what can and should be done with old heating oil found in unused or abandoned oil storage tanks.

Proper oil storage tank abandonment requires the use of good engineering practices, including consideration of the future condition of the tank. While the original of this article focused on commercial oil storage tanks, the concerns and steps should be examined by those abandoning residential oil tanks as well. Readers of this page should see The Oil Storage Tank Website.

© Copyright 2009 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website.

What is the Shelf Life or Storage Life of Home Heating Oil?

Diesel fuel, which is basically the same as No. 2 heating oil, is said by sources we've read to have a shelf life of 18-24 months without any fuel additives having been put into the tank. (Diesel fuel is basically No. 2 heating oil PLUS some fuel additives for winter use in vehicle engines).

Additives to diesel fuel are intended to be added when the fuel is put into the tank, not years later, and they claim to preserve the fuel's octane and combustion characteristics.

How can we extend the storage life of heating oil in a tank?

IF someone had put the proper additives into the tank of home heating oil when the fuel was delivered, it could have been reliably stored and then used up to two years later. Contact your heating oil delivery company to ask their recommended products for adding to and protecting the life of heating oil.

Can a heating oil additive "restore" old heating oil and make it good to burn in our oil burner?

Can an oil additive rejuvenate old stored heating oil? It's unlikely but we'd need to ask the chemical engineers who make those products. We speculate that products intended to be added to Diesel or perhaps to heating oil are intended to be added as preservatives at the time of delivery of the oil and that they are not designed to restore or rejuvenate old heating oil.

We have found no indication that adding a diesel fuel additive, or a heating fuel additive such as 4-in-one hot™ (sludge breakup and water remover) to heating oil will "restore" the original properties of oil that has been stored for a decade.

Remember that what was in the ground for a million years was not No 2 heating oil, it was a gooey ugly sludge crud that was then refined or cooked and purified at the oil refinery.

Why does heating oil deteriorate while in storage?

What might contribute to heating oil breakdown in an oil tank?

• bacterial action that is natural and happens in all heating oil tanks
• contamination by water, acids that form in the tank
• contamination by sludge, rust, crud that form in the tank
• contamination by someone dumping un-wanted chemicals of any sort into an old heating oil tank that they knew was unused - old dirty motor oil, paint, thinner, or just about anything. We have had occasional surprising reports of weird stuff people dump down wells and into tanks because they didn't know what to do with it and were afraid to call their local DEP or the EPA (as they should).

What Can we Do with Old Unused Heating Oil

Used oils (not recovered "virgin oil") can be re-refined and used for various purposes according to the US EPA but we are doubtful that the volume of old virgin oil in a typical residential heating tank is enough to interest most large recyclers. Your heating oil company can remove and dispose of your unused heating oil, as we recommend just below.

Concluding Advice for People who Find Unused Oil in an Old Oil Storage Tank

Oil burners are tolerant of a range of oil quality, and it's possible that old heating oil would "work" in such a unit, but given the uncertainties and information we listed above, we would not risk a heat outage or an extra no-heat service call to make use of a couple of hundred gallons of heating oil. You are getting $600. or so of "free" home heating oil but you are risking $250. to $400. for a no-heat call, or a still greater expense if loss of heat leads to frozen, burst pipes in a building.

The owner of the old heating oil should call local heating oil companies to ask if they'll pump out the oil - be honest with them that it's old (give the date of last oil delivery if it is known) - lest the oil be distributed it to someone and cause a heating problem.

Removing the heating old oil avoids a future oil leak or environmental issue at the property - a potentially costly problem. It is improper to leave an abandoned oil storage tank with oil inside - the oil should have been removed and still should be removed now at this later point

Be SURE that the tank filler and vent are totally removed lest you get an un-wanted oil delivery. Don't laugh, it happens.

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• Thanks to Dave at Air Doctor Heating and Cooling, 330-658-7777 for posing and discussing this question 12/08
• US EPA information on re-use of "used" oils: epa.gov/osw/conserve/materials/usedoil/usedoil.htm

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OIL TANK HOME
  HOME BUYERS GUIDE TO OIL TANKS
ABANDONING OIL TANKS
ABOVE GROUND OIL TANK INSPECTIONS
BURIED OIL TANK ADVICE
BURIED OIL TANKS, FINDING
FLOATING UP OIL STORAGE or SEPTIC TANKS
FUEL OIL TYPES & CHARACTERISTICS
HEATING OIL SHELF LIFE
HEATING OIL EXPOSURE HAZARDS, LIMITS
OIL TANK ABANDONING PROCEDURE
  INDOOR OIL TANK ABANDONMENT
  OUTDOOR TANK ABANDONMENT
  OIL TANK BANDONMENT REGULATIONS
  AVOIDING CAVE-INs at OUTDOOR OIL TANKS
  REMOVING OLD FUEL FROM OIL TANKS
OIL TANK FAILURE CAUSES
OIL TANK FAILURE RATES
OIL TANK GAUGES
OIL TANK INSPECTION REPORTS
OIL TANK DEFECT INSPECTION
OIL TANK PIPING DEFECTS
OIL TANK LEGAL ISSUES
OIL TANK LEAK ADVICE
OIL TANK LIFE
OIL TANK PIPING DEFECTS
OIL TANK PRESSURE
OIL TANK REMOVAL COs
OIL TANK REMOVAL FINANCIAL AID
OIL TANK REGULATIONS
OIL TANK SLUDGE
OIL TANK STANDARDS
OIL TANK TESTING
OIL TANK TESTING COs
OIL TANK WATER CONTAMINATION

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More Information On:Buried and Above Ground Oil Storage Tanks & Oil Tank References

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• Oil Tanks - The Oil Storage Tank Information Website: Buried or Above Ground Oil Tank Inspection, Testing, Cleanup, Abandonment of Oil Tanks
• Abandon a Buried Oil Tank, How To - Abandoning Commercial Underground Tanks, Russ Brauksieck, ASHI Tech. Journal, Vol.3 No.1 Spring 1993, P. 40-41 [Reprint]
• Above Ground Oil Tanks: Visual Inspection of Oil Storage Tanks for evidence of leaks, damage, improper piping - photos and text
• Above Ground Oil Tanks Checklist, an Oil Company's advice
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• Buried Oil Tanks - Finding How to Find Buried Oil Tanks and "Nearly Hidden" and Leaky Oil Tanks - photos and text.
• Buried Fuel tank - Advice - Buried FUEL Tank - GAS or OIL advice for home buyers, inspection report language
• Environmental Issues & Regulations for Oil Tanks, Registration, Abandonment, Leak Reporting
• Home Inspection Report Language Library: Buried Oil Tanks, Basic home buyer advice - home inspection report language suggestions
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• Home Inspection Report Language Library: Oil Tanks text file list © Oil and Other Storage Tank Leaks, Testing, Abandonment, Inspection - UST home inspection report language files - Reference List
• Indoor Environment Website Indoor Building Environmental Hazard Detection, Testing, Repair, & Prevention - Main Web Page
• Leaky Heating Oil Tanks - Advice for Home Owners or Buyers: caused of leaks in oil tanks, oil tank testing alternatives, what to do about leaky tanks: D.J. Friedman, ASHI Tech. Journal, Vol.2 No.1, Winter, 1992 p. 42-43 Illus
• Leak or Failure Rates for Home Heating Oil Tanks
• Legal Issues Regarding Buried Oil Storage Tanks K.S. Rea, Attorney, summary from ASHI Chapter Seminar.
• Primer on Petroleum Bulk Storage Tanks & Petroleum Contamination of Property Paul H. Ciminello, ASHI Tech. Journal, Vol.3 No.1 Spring 1993, p 35-39
• Petroleum Bulk Storage J. Sibblies, NY State DEC, Advice to Home Owners and Home Inspectors about Oil Storage Tanks - summary from ASHI Chapter Seminar.
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• Web Link Exchange: Contact Us to list your website or contact information for oil tank testing, tank corrosion research, oil industry experts

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