CPS wrote:Matic J is no longer offered by Nissan. It has been replaced by Matic S. So if you go to the dealer and get it, don't think they sold you the wrong fluid.
And, yes, you need to get that Castrol stuff out immediately. There is no known compatible fluid with Nissan's automatic transmissions with the exception of Matic D.
Fluid manufactures have long since identified what the ingredients were in J-matic and there are plenty of substitutes. There are other threads (I don’t remember right now where) that give the exact make up of J-matic and what other fluids have the same ingredients. I just had my M35’s fluid changed by a local tranny shop (Automatic Transmission Factory in Davie, FL) that used Amsoil synthetic and a bottle of Lubeguard. What a huge difference!! The tranny shifts smoother when I drive nice, but kicks harder when I jump on it. I never expected these kinds of noticeable results just from switching fluids. And I have been a Castrol guy for 20+ years.
By the way, this same tranny shop just rebuilt my wifes Honda tranny, and it runs better than new. I have to say these guys know what the heck they’re doing. My son’s Stratus is going in next.