It's been probably a handful of years since I had to buy any ATF. I remember the last I bought was from Walmart brand Type F, I would buy whatever they had when I would go in there shopping. Took me a few trips to get enough for a service change. Lately walmart has been redoing their oil section and seems like they are carrying alot less. I was surpirsed they still had Type F, I forget the price I want to say $5 a qt. I didn't grab any as I have about 20 qts at home yet.