I'm thinking about changing out the transmission fluid in my 2.4L 08 Sonata (manual tranny) and I'm trying to find out what would be the best fluid for my car. I tried googling but results seem to vary. It seems like the general consensus is to stick with Hyundai oil, which is apparently expensive. Is there any alternatives to Hyundai oil? Also how much of it would you need, 3 quarts?