To weld on a tank you would first flush it with lots of hot dish soapy water. Then purge it with an inert gas that contains no oxygen. Argon is normally used.Perhaps try running the exhaust from a car into the tank. I believe I heard of people doing this when they wanted to weld on a damaged tank. Supposed to push out the fumes that we explode.
^^ What he said ^^To weld on a tank you would first flush it with lots of hot dish soapy water. Then purge it with an inert gas that contains no oxygen. Argon is normally used.
Lots and lots of hot soapy water is your best bet to knock down the smell. If you have fuel varnishes inside though even this will not get rid of the smell 100% but is should knock it down enough for Fed Ex. Obviously you don't want to transport a bomb but once you have got everything you can reasonably get out then box it up before brining it to FedEx. I have bought many tanks on ebay and they almost all had some smell of fuel but one point is NOT to use the words "fuel" or "gas" in the description..... "motorcycle tank" will work fine without raising any red flags:up:
Ditto!!! Tig welded customizing a lot of HD gas tanks. Exactly the method I used and I'm still alive so it must of worked!!!To weld on a tank you would first flush it with lots of hot dish soapy water. Then purge it with an inert gas that contains no oxygen. Argon is normally used.
Lots and lots of hot soapy water is your best bet to knock down the smell. If you have fuel varnishes inside though even this will not get rid of the smell 100% but is should knock it down enough for Fed Ex. Obviously you don't want to transport a bomb but once you have got everything you can reasonably get out then box it up before brining it to FedEx. I have bought many tanks on ebay and they almost all had some smell of fuel but one point is NOT to use the words "fuel" or "gas" in the description..... "motorcycle tank" will work fine without raising any red flags:up:

 
				