21 Charger Scatpack 12k miles. Grease leak at Pinion

At oil change time at my trusted shop (A +D) here in Lakeland, Tech noticed this. Not enough to drip or smell. Not sure it’s related, but when decelerating and coming to a stop at about 10-15 mph there is a detectable hum rhythmic sound related to road speed. I’d describe it as a weep or slight sling where the driveshaft goes into the pumpkin. Warranty so it has to go to the Dealer. Purchased at Lakeland Dodge. Any recommendations here in Central Florida?