Mixing Synthetic ATF and Conventional ATF 4+?

[EGidley]

I'm going to install a deep pan and new filter this week. After I Drain all that I can, I want to add synthetic to the remaining conventinal ATF. Is this okay?Anybody know. Thanks.

 

[R_Painter]

atf+4 is considered synthetic I usually buy it from walmart since it is usually 2. 50 cheaper than autozone

 

[EGidley]

If that's the case... then can I add Synthetic to the remaining conventional ATF that 's in my transmission now?

 

[ANG012]

Should not be a problem. Read the label, it should tell you. I switched mine over at 40,000 miles, drained the transmission and filled up with Amsoil, and now change mine out about every 25,000.