Well your's isn't the only 2013 Nismo with a rear main seal leak,I took my clutch out yesterday and saw that it is leaking no big deal I'll just put a new one in but no dealers in Georgia have any.
Also I was informed by my dealer that Nissan changed the seal in production as of 5/12 well guess what my car was made in 5/12.
If I can't get a seal in a week I'll miss Z day's for the 3rd year in a row
