Did an oil change today on a bridge and noticed my rear diff was wet with fluid/oil. I check all my reservoirs including the dynaqueen one in the trunk every 2-3 weeks or so and it hasn't gone down for at least half a year.
Is this something to worry about? My car isn't tuned excessively (330HP) but I push it pretty hard.

 

If that was my 10, I would definitely worry. Leaking diff, who knows how much fluid is still in there.. Have you found the source of the leak?

 

FYI - Res in trunk if that is ACD or AYC should have ATF not Diaqueen Gear oil. Pinion seal is likely going bad. Not an expensive part but will take someone who knows how to do it to get the preload reset correctly. Also check to see if there is any other lines above that area. I have IX RS so I have nothing in the trunk but wiper fluid.

 

The ATF for the ACD/AYC will smell noticeably different than the Diaqueen/Gear oil. If the oil from your leak is super stinky, it's gear oil and likely seeping from a bad seal.

 

Thanks for clarifying that, I'll message my tuner and see if they noticed this leak in the past