N/S Diff oil leak??

[RUdeaf]

Just had a full service today. 2010 cup @ 29,500 miles. Garage (non Renault) advised on slight oil leakage around the n/s diff and output shaft.
Wiped it clean and told me to drop in in in 2 weeks to check where coming from. Searched the forum and could'nt find a similar issue. Any idea anyone what the worst case senario would be + costs?

 

[Chris]

Seal? If so, can't seeing it being cheap. Thats just a guess though.

 

[Foxspeed]

more than likely the diff/driveshaft seal....drain oil - remove driveshaft - remove seal - fit new seal - refit driveshaft - fill with oil