Originally Posted by kbsilver
Was just at the dealer for service and they locally came up with a better fill adapter as the one supplied by BMW took 2 people. I was thinking about doing this already. Using one of the 1/2 gallon screw on bottles, (for the sedan) cut a slot open on the side of the bottle (2"x3") towards the bottom (when standing up) that would be facing up when screwed into the fill port. Then hold the fill valve open in the bottle by pushing in and putting on a hose clamp to keep it from moving and closing the valve. Just screw on the bottle onto the fill port, then slowly pour the DEF into the open slot. Do not fill the bottle completely as all the weight is being supported by the port. Also do not go too fast when the DEF tank is near full as once full and you want to remove the bottle, if any DEF is still in the bottle it will pour out when you unscrew it. Wash the bottle with water when done or any remaining DEF will crystalize.
i need a visual schematic or pics, but sounds like a plan.