Hi Speedy_1234:
That was may initial suspect and hence, I changed the transmission oil and filter.
This problem does not happen on the start. But, I have observed it after running for 2 or 3 miles.
As said earlier, this problem is not seen frequently. But, when it happens, it happens couple of times.
Recently, I travelled in this car for more than 1000 miles and I never observed this problem.
One another suggestion I need:
The music system (BOSE) stopped functioning all of a sudden. Basically, there is no power to the system. Before showing this car to a mechanic, I would like to check some basic things, like FUSE and other connections. Request you to give some update about the fuses that is applicable for the music system in Infiniti J30.