Originally Posted By: Lolvoguy
For PS, they are interchangeable as I've used both on my PS and it runs quiet and smooth.
For the trans, I'd recommend only Mercon V, as after running regular Mercon it wasn't nearly as smooth shifting as it is with V. You can use Mercon, but I'd suggest using it as a flush as I did.
If you get it at walmart, the Supertech version is fantastic and meets the same requirements as the other name brand Mercon V's, and is a bit cheaper.
I too used the Supertech Mercon V in my trans and TC with no issues. But I put Mercon V in my PS resovoir, and it's fine, just curious why they basically say that it is a NO-NO.