My '01 Audi S4 progress

2 things. If you think you’re going through way too much fluid you probably have a leak. The resevoirs have a tendency to crack and the pumps have a tendency to leak, not to mention the connections on all the lines to the headlight washers suck ass.
All that being said, I have a spare resevoir with both pumps on it if you want to try getting the washers to work. Let me know if you’re interested.