1996 Acura TL Rear Main Seal Leak

Hi, I just recent found a leak on my 1996 acura tl. Its coming from the rear main seal.

A friend of mine told me that there is an oil additive that might help small / minor seal leak after 200-300 miles of steady driving.

My question is does anyone know what the additive or chemical is? So I can try and add it to the oil to see if any result can be achieved.

THANKS! Guys