It says in the manual to put only Audi hydraulic fluid in the power steering resevoir. Will any power steering fluid work???

 

Everything I've read says only Audi. Do a search, I had the same problem a month ago and there was a lot of info and what not in the archives. But what I took from researching was only use Audi powersteering fluid. Get it at the dealership, I think it was like $15.

 

You want to use Pentosin fluid to be safe.
http://www.purems.com/products/product.php/II=1034