As long as the fluid level on your trans dipstick is where it says it's supposed to be, with the engine running and on level ground, don't worry about your fluid level. A new engine and a 10" convertor equal a hot tranny. You should still install an external cooler, but I think you will notice the trans temp come down a bit as the engine gets broken in.
Take care
~Chris
------------------
Retired Moderator
MustangNet
My site:
JimPorterRacing
RACECAR spelled backwards is RACECAR
HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!