Please read this thread AGAIN. All of it. Sooner or later, someone, maybe not you, is going to end up parked on a hill, maybe Seattle, maybe Francisco, maybe Podunk USA with the filler on the downhill side. Or on the left side of a crowned road. And a full tank. In the sun. And the fuel is going to puke out the VENTED cap and run down the fender.
Now it MIGHT drain some out the factory vent.................but at least it won't be running down the side of the painted car
