I know we all have our own preferences on oils and this thread is not to start that debate 
I always used the Mobil 1 0w-40 in my A4 and had 0 issues up through 159k when I sold it.
Just happened to notice the Costco has M1 0w-40 on sale through 3/4/18
6qt pack for $26
http://i222.photobucket.com/albums/dd45/Razgriz_10000/Untitled_zpsjgdyvtxl.png
12qts to do a change on the 5.2 for only $54 plus free shipping… I’m sold. ;D
https://www.costco.com/.product.643415.html
If y’all got that Costco membership, might be worth looking into.