Maud,
What you want is an inert gas (if tailpipe emissions were inert smog wouldn't be much of an issue.) Plain air would be better than exhaust (except in L.A. and Houston). Argon would be my first choice. It is heavier than air, so it is less likely to leak out of your tanks. It's also very inert, I can't even think of an argon compound off the top of my head. It's used as a welding gas. Check with your welding supply company. http://www.weldingsupply.net/argon.htm In the university labs we used Nitrogen. But in the real world, try calling your local medical supply company. In California anyway, they deliver right to peoples homes. N2 is more reactive than Argon but see how it compares on price, availability, and safety (argon is stored at high pressures). Don't know what medical nitrogen runs, I don't even know what it's worth to you, I would pay a lot to be able to procrastinate anything. Helium is inert and readily available at children's birthday parties. Trouble with helium is it's so darn light it will surely leak out of your tanks and you will have to replace it from time to time (or maybe all the time). This group seems pretty safety conscious so I won't even mention Hydrogen. Ooops. Plus you know what happens when you bubble hydrogen through oil. Once you get a cylinder of gas, all you need is a small diameter hose from the regulator to your tank, no need to buy a welder. Just stick the hose in the tank opening, above the liquid level, open the valve and move the hose around in different directions. Time duration really depends on the volume of 'air' space and the size of the opening and size of tubing. I think it's already been said, but temperature and light also affect oxidation so keep it cool and dry. This discussion is starting to make me feel bad about the bottle of Wesson I've been cooking with for a couple of years now, I think I'll go dump it in my fuel tank. -Steve Message: 12 Date: Thu, 03 Jun 2004 02:26:32 -0000 From: "maudessen" <[EMAIL PROTECTED]> Subject: Re: proper storage of used cooking oil to make it last longest possible Thanks for such a practical idea; I hadn't thought of displacing the air in the tank itself. For lack of a MIG welder I could just exhaust my 1984 turbodiesel into the tank to displace the air, couldn't I? It reminds me of the old technique for ridding one's yard of gophers... Not being a chemist, I am guessing that automobile exhaust from a turbodiesel would contain more carbon monoxide than carbon dioxide, plus a bunch of soot and other particulates. Other than the temperature of the gases, would the chemical composition of the exhaust fumes degrade the oil more rapidly than the air being displaced? Maud St. Louis, Missouri [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
