My guy worked for Benz for 45 years and he uses anything as long as it's Dextron. We buy it is Walmart. Most of these stuff is refined by very few supplies and it just packaged according to how much you want to pay. Years ago a beautician told me you could get a ten dollar perm (not me) or a 50 dollar perm. The difference was all in the BS. It will likely take a little over 7.5 quarts if you drain the converter also. That's easy enough.