2.5 is about the norm for me with a new, never filled Go-cart. I am boring as to juice selection so I know what I'll be using the next day and the day after that and... 
I do find that if I fill with the 2.5 and let sit for a day or so before I use it, I can get another 18-20 drops in. Mohawkz had concluded that the filler on a previously unfilled takes a few hours before it thoroughly absorbs. My experience would seem to verify that. By the time I add the extra after sitting I am right at 3ml.

I do find that if I fill with the 2.5 and let sit for a day or so before I use it, I can get another 18-20 drops in. Mohawkz had concluded that the filler on a previously unfilled takes a few hours before it thoroughly absorbs. My experience would seem to verify that. By the time I add the extra after sitting I am right at 3ml.
