Carder

Yesterday Tyler replaced my defective Bravo 1 drive and I took it home and put it on the hoist, as the weather is sucking. I noticed an oil slick surrounding the drive at the ramp, and also when I got it on the hoist. It's a Air dock, so the bottom of the drives just barely sit in the water. Should I be concerned, or do you think this is residual from the new grease, refilling the lower unit, etc? There is no loss of drive oil showing in the resevoir tank. P.S. Tyler switched it out and found a blocked water passageway in the plumbing, all in about 1.5 hours. He is awesome. Carder