So is this topping off issue were it spills into the vent pipe thus not s
Alowing the system to pass it's gas, fumes (no pun intended, yeah it is, ).
Is this for both gas and diesel because i ain't gonna lie, I pack that baby as full as she will go until it starts dribbling out the overflow tube underunderneath . Yeah I know I'm gonna get some hate mail from an environmentalist, that's ok. when I only get 8-12 mpg, im packing that baby full unless it's highly possible that it will cause damage eventually. Not to say it can't happen, you can also burst into flames at the pump, but after decades of driving I've not caught on fire yet or had any damage from topping off actually made a noticeable difference for me.
I better knock on wood now, and the metal on my truck before I touch the fuel handle