motor oil leak

Could be a valve cover gasket but I'm sure the dealer would have suggested that if that were the case. You would have to wash down the engine or degrease the area of the leak to examine it closely, perhaps even use dye to pin point the leak. If it were real clean Permatex make a product you spray on an area of an oil leak that puts a plastic coating in place. May fix a leak if it not a pressure leak.