I'm looking to change the atf in my jeeps automatic soon, and was wondering if walmarts atf+4 is any good? Its the only other stuff I've found besides the factory stuff and the Castrol and Valvoline stuff that Autozone sells. I was gonna get the valvoline stuff, but its 5.50 something at the zone,but the walmart stuff is only 3.40 or 3.50 something a quart. I'm just a little leary on trying it after hearing the problems they had with their gear oil actually meeting specs.