Not sure the fluid I have in my 727 , lost some fluid changing cooler lines

[jerry6]

not enough to need more , yet . But like to carry extra fluids just in case , what fluid should be used that will be compatible with the mystery fluid in there now in case it needs a bit of fluid due to leak or other minor disaster ?
Fluid in it now is super clean , looks and smells fresh so it's not needing a total change .

 

[oldkimmer]

..............Dexron ATF.............kim.........

 

[bOb shingler]

..............Dexron ATF.............kim.........

yes that is what comes in them and is recommended by mopar but type "F" is better to use. don't add it to your trans now but only when it's totally emty as in a rebuild or you drain it out.