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  1. #11
    Silver Member coreshot's Avatar
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    Sep 2008
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    249
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    Utah
    Tractor
    Kubota BX24

    Default Re: Storing gas in a propane tank?

    They also make a product for lining gas tanks to prevent them from rusting out. It is used in motorcycle production quite a bit. If you had a way to get inside the tank and coat it, it would eliminate several issues. When doing bike tanks, you just dump it in and shake it around to coat it, then dump out the remaining product. Once it has cured, you're good to go.

    As said before, I'm sure your supplier has a list of regulations as long as your arm for what type of container he can fill. Ask him.
    Cory Payne
    ___________________________________________

    2008 Kubota BX24-LandPrideBB-KK 60"RB

    Build a man a fire and he'll stay warm for a day.
    Start a man on fire and he'll stay warm for the rest of his life.

  2. #12
    Platinum Member
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    Oct 2009
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    IL
    Tractor
    Ford 555 TLB, Xtra-Vator, pallet forks; Caterpillar 12 Motor Grader; FABTEK aerial platform

    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by zmoz View Post
    If I got a regular gas tank around 250 gallons it would have to be new, and probably cost nearly the same.
    Why would it have to be new? I see used tanks at farm and commercial auctions quite often.

  3. #13
    Gold Member ctgoldwing's Avatar
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    Jun 2009
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    312
    Location
    Central Connecticut
    Tractor
    L3400HST

    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by CurlyDave View Post
    I suspect that you would be far better off to use a gasoline storage tank made for the purpose.

    The only real reason to even think about using a propane tank is if you already own one and can modify it at low cost. However, you can probably sell one for what a real gasoline tank would cost.

    Some tractor-trailer rigs have aluminum diesel tanks which make up into very nice storage tanks. They can be used for gas if the diesel is cleaned out. Don't know about prices, but one from a wreck could be good.

    +1
    Years ago I had a large gasoline generator (Ford 292 in it) hooked up in my garage. I solved the gas storage problem at a local marine supply store. He had several 50 gallon aluminum tanks that were rectangular & low (as I remember they were about 4 feet long, 12 inches high & 18 inches deep). He had several and I bought one for $50. He told me at the time that he always had them available, cheap, in different sizes. Might be worth a look?

  4. #14
    Silver Member
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    Feb 2004
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    204

    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by Egon View Post
    I'd suggest a vent just like an ordinary fuel tank sized for your tank. If not vented there could be times the tank will be in a negative air presser state for which it may not be designed. There may also be fuel delivery problems when it is in this state.

    Put on a drop leg with drain valve for a water accumulator.
    Unfortunately that won't work with the ethanol mix they pass off as fuel around here, water is absorbed into the fuel completely and doesn't sink to the bottom. (unless it's REALLY saturated)

    That also may be a good idea for a CO2 or other inert gas fill at low pressure, have a regulator set to keep it at like 10 PSI at all times.


    Quote Originally Posted by ctgoldwing View Post
    +1
    Years ago I had a large gasoline generator (Ford 292 in it) hooked up in my garage. I solved the gas storage problem at a local marine supply store. He had several 50 gallon aluminum tanks that were rectangular & low (as I remember they were about 4 feet long, 12 inches high & 18 inches deep). He had several and I bought one for $50. He told me at the time that he always had them available, cheap, in different sizes. Might be worth a look?
    If I could find 'em that cheap I'd buy a bunch. Never seen anything like that around here. I need tanks for my boat too, and even the plastic ones cost more than that from what I've looked at.

  5. #15
    Veteran Member Iron Horse's Avatar
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    Feb 2008
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    Orstraya , Ex convict stock , G'day .

    Default Re: Storing gas in a propane tank?

    In Australia , it is illegal to store any more than a couple of gallons of Petrol/Gasoline because of the fire hazard risk .

    As for using the Propane tank , If Firemen were to attend a fire at a house with a Propane tank outside , they would have standard procedures to handle that particular risk . If by luck or by bad luck they found out the tank had Gasoline in it , you would never see daylight again , especially if someone got hurt .

  6. #16
    Silver Member
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    Feb 2004
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    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by Iron Horse View Post
    As for using the Propane tank , If Firemen were to attend a fire at a house with a Propane tank outside , they would have standard procedures to handle that particular risk . If by luck or by bad luck they found out the tank had Gasoline in it , you would never see daylight again , especially if someone got hurt .
    Do firemen naturally assume that propane tanks full of, well, propane, are safe when they're burning? Or back to the first question I asked, is a tank full of gasoline anymore dangerous than a highly pressurized tank of propane?

    I understand storing gas, in general, is dangerous, but, I also know that millions of people have a propane tank in their yard or a diesel tank in their basement...I don't see those as being any safer.

    The only advantage propane might offer is that it can't "drip" out and contaminate the environment. Also, I'm thinking about getting a propane tank for propane, too, so it would be kind of nice if both tanks matched. Maybe even paint the gas one red, and wait out there with my .357 for the theives...

    I still don't know what exactly all the regulations are, but, I do know from my shop I can see the refueling tank for the local school bus fleet, above ground, a couple thousand gallons, maybe 500 feet away.

  7. #17
    Super Member
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    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by coreshot View Post
    They also make a product for lining gas tanks to prevent them from rusting out. It is used in motorcycle production quite a bit. If you had a way to get inside the tank and coat it, it would eliminate several issues. When doing bike tanks, you just dump it in and shake it around to coat it, then dump out the remaining product. Once it has cured, you're good to go.

    As said before, I'm sure your supplier has a list of regulations as long as your arm for what type of container he can fill. Ask him.
    The shop where I worked in the 80's sold a lot of the fuel tank sealer... it worked great until reformulated fuel hit the marked... it turns the sealer into a glue like glob....

    I had a problem and contacted the manufacturer and said it was never designed for use with alcohol...

  8. #18
    Super Member
    Join Date
    Apr 2004
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    SF Bay Area-Ca Olympia WA Salzburg Austria
    Tractor
    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by Pops15 View Post
    DO NOT use compressed air to pressurize your tank. Doing so could cause static build up. That would not have a happy ending.
    I have several Model T Fords and they use compressed air to pressurize the fuel tank when going up steep hills... normally the fuel is gravity fed unless the hill is steep... the other alternative is going up in reverse putting the fuel tank higher than the carburetor...

    The system pressurizes 1 to 2 pounds...

  9. #19
    Silver Member
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    Default Re: Storing gas in a propane tank?

    Quote Originally Posted by ultrarunner View Post
    I have several Model T Fords and they use compressed air to pressurize the fuel tank when going up steep hills... normally the fuel is gravity fed unless the hill is steep... the other alternative is going up in reverse putting the fuel tank higher than the carburetor...

    The system pressurizes 1 to 2 pounds...
    LOL, that's funny. I've heard about the going in revers thing. I'm sure they weren't worried a whole lot about whether it exploded or not though.

  10. #20
    Silver Member
    Join Date
    Apr 2006
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    208
    Location
    North of Escondido, San Diego
    Tractor
    Kubota L4330****RTV 900

    Default Re: Storing gas in a propane tank?

    I recently spent quite a bit of time researching storing gasoline as I need it for my home defense fire pump. A few comments that may or may not be of use.

    I would make sure your supplier will fill the tank. I recall a limitation of 60 gallons for home storage. It may or may not apply and I don't recall whose limitation it is, it may have been the EPA. There can also be insurance implications for larger amounts of stored gasoline.

    You can get a vent for a 50 gal drum for petroleum storage. It vents pressure at 5 psi and vacuum at 4 psi. Justrite drum vents.

    I believe gasoline is best stored under pressure. Vapor pressure of reformulated gasoline varies but seems to max out at about 17 psi at 100F. Winter gas has a higher vapor pressure than summer gas. I believe venting is recommended in case of fire to avoid explosion. I plan on venting at 17 psi in a 9 gal tank. I may try one of these diesel fuel check valves. Check Valves & Pressure Relief Valves for Diesel Fuel

    A lot of sources recommend stabilizers if stoing more than three months or so. Chevron's web site indicates you can store their gasoline for a year. I plan on using Pri-G stabilizer.

    Zeuspaul
    Kubota Grand L4330,FEL, Box Blade, Brush Mower, Tiller, Sub Soiler....RTV 900

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