The leu opened at 4.3715/4.3735 to the euro, from 4.3740/4.3745 to the euro at closing the day before.
It later lost the gains, and returned to Thursday closing levels at around 10:15 local time (GMT0715).
The other currencies in the region were also posting small changes, on low transferred volumes.
The Romanian central bank set Thursday the leu’s reference rate at 4.3748 per euro, from 4.3778 per euro in the previous day.
On the money market Friday morning, overnight rates were up to 3.3%-3.8% a year, from 3%-3.5% a year Thursday.