I would be happy to time it this Saturday. I know the cans I'm currently using vary greatly, depending on the angle at which you hold the can, since they vent through the center nozzle itself. Why would you try to vent something in the center of a streaming fluid is beyond me. I have no doubt that your cans flow better than many I've used, many got donated to the municipal dump, hazardous waste collection area, filled with used oil. Since your can vents at the top, it should flow consistently through a wide range of fuel can angles. I just hate most CARB compliant cans, I've never spilled so much fuel, or waited so long in my life.