posted on Jul, 13 2009 @ 06:30 PM
Also, the unleaded nozzles are smaller than the old leaded fuel nozzles.
Most tanks now have smaller filler tubes and route sometimes almost 90 degrees before entering the tank with maybe other turns.
Todays also work in a closed pressurized system, notice the relese of pressure when tapping your filler cap?
If the fuel flowed faster, it would auto-kill the pump from backpressure.
That's what I think.
as far as pumps, I notice when someone is filling from other side, and same grade, the flow slows dramatically.
I would assume the pump is shared and the valve is opened and closed from the electronic switch when choosing grade, or when lifting nozzle/
[edit on 13-7-2009 by imd12c4funn]