I would like ot use Ams oil but i don't want to spend $100 on tranny fluid. I can get a case of Quaker State 4x4 heavy use Synthetic blend trans fluid for $21 on sale. Its says that it can be used in cars as well as 4x4. I also says that it works with Mercon, Mercon V, and Dexcon 3. Has anyone used this stuff before? Do you think it is ok to use?