RamblingMan

Happily the fluid on my new A6 is full. Seems like getting a gallon bottle to the fill spout without spilling any will be a challenge. I'm thinking a long funnel with a pitcher would do it. How do you fill yours?

bpd

Pour some in a smaller container or funnel.

DanfZX14

It's not as bad as one would think. Just go real slow!!

Acuransx

I wind up spilling some usually. Not end of world but location of the bottle isn't the best.

50pascals

Buy the good stuff in the flat rectangular bottle. Lay it on it's side while pouring. You will spill very little.

And it won't hold a full gallon anyways - so you will always overflow some at the end.

snagitseven

Here's what I use. The extension attachment makes it easy to get in the back and the auto shut-off prevents over-filling.