I'm in the camp of those who think it is an adventure tank (30lts).
When you look at the picture of the tank shot from above you can see two fold lines which run from the base of the left and right logos up to the fold line which has the filler cap. On a standard tank those fold lines stop at the point of the where the tip of the red logo is. Because the fold lines in the picture are longer, it implies that the lobes are wider.
Also the adventure tank has a pressed indentation at the base of the left and right lobes near the welded seam. You can just see it in the second picture showing the damage. (top left corner of picture).
When you look at the picture of the tank shot from above you can see two fold lines which run from the base of the left and right logos up to the fold line which has the filler cap. On a standard tank those fold lines stop at the point of the where the tip of the red logo is. Because the fold lines in the picture are longer, it implies that the lobes are wider.
Also the adventure tank has a pressed indentation at the base of the left and right lobes near the welded seam. You can just see it in the second picture showing the damage. (top left corner of picture).


