I have 9.5 liter tank. I use it just because I have to with gp800 motor set up and it fits around the pipe Other wise I wouldn't use it. It doesn't take long to use up 2 gallons then you have little bit sloshing around and you have to go in to fill up. I never feel safe to go very far away before I have I check to see how much gas I have left. There is no reserve pick up.
I do like the cap on top and that makes it easy to fill up. It is also very easy to take out or you ski. It takes less than 2 min to install or remove. I wish they made a little bit bigger one.
Dale