Transmission fluid compatibility
 

I’m doing a partial Transmission fluid change on my Pacifica. Can I mix Mopar ATF+4 and SuperTech ATF+4 (Walmart Brand)

Yes, both are licensed ATF+4. I like SuperTech because it is less expensive. No issues using for over 10 years.

what about full synthetic ATF+4 and just regular ATF+4? Oreillys told me all transmission fluid is full synthetic but I don’t trust those Auto store works as much as a mechanic.

I will only comment on ATF+4. It is synthetic and good for 100,000 miles under normal conditions. It may not say so on the bottle, but the licensing to call it ATF+4 makes it synthetic. Note, do not confuse licensed ATF+4 with ATF+4 compatible; not the same. The actual specification is MS-9602 and should also be present on the bottle.