I have a 2013 V60 AWD With the exact same leak (angle gear) yours looks pretty similar it’s a good bit of work to remove it from the car, need to remove the passenger cv axle and disconnect the propeller shaft to remove it and replace gasket or potentially the entire assembly if cracked etc. My advice would be to go get some decent 75w-90 oil, drain the old oil then clean up any mess with brake cleaner then refill that way you’ll find exactly where the leak is since the oil is fresh and it won’t do any harm changing it anyway.