I just did my a4 filter and used 5 quarts like Steve posted above. If that's what you are doing get your filter and gasket from Napa, they have the nice neoprene gasket. I also got a cheap fluid pump off Amazon to put the fluid back in that worked great. I also reccomend having a few new pan bolts on hand in case any of the old ones had been over torqued and flipped the washer.