Safe to put in Mercon V in A833?

I had my A833 rebuilt by a guy who really knows these trans. Apparently I can (should?) put in ATF.

I have a couple bottles of new Mercon V from the Ford dealer that I bought a few months ago that I didn't need. I was wondering if it's safe to put Mercon V in the trans? Mercon V is the replacement for Mercon fluid.... Thanks.