I can tell you that every one of the fuel containers we shot blew up real good. Maybe it was the steel on steel of the AP rounds going through the container that made sparks or whatever, but it was our goto detonation scheme if the explosive charge (usually a black powder pipe bomb) failed to rupture the container.

BTW, they don't make mushroom clouds when they go off. They usually make big blue or yellow balls o' fire. It's not like an open puddle of gas on the ground; a little pressure and the combustion efficiency goes right up.