krypton...good point!
otherwise, nelly, you can also look into the 'plastic' fuel tanks they use for boats...they should be rated for this type of fuel, and come in significant sizes...
or perhaps a stand alone tank, that can still be moved with little difficulty...
Domestic heating oil tanks
the biggest issue is water in the fuel, as it is dry, the fuel will absorb moisture through the vents...this is significant volume. tanks will have a floating suction so they never draw off of the bottom, and there are ways to drain the bottom of the water...