091 passenger output shaft seal + oil

My passenger side output seal is weeping, and I would like to know if it's gear oil or transmission oil behind it? I don't want to pull it apart until I know what to top it off with.

2004 Jetta BEW 09a 5sp Auto

Thanks, Terry

09A diff is lubed by the transmission fluid, no seperate gear oil like the 01M

Thank you!