Sorry I should have been more specific maybe in saying a oil lubricated part failure, but not to suggest the oil had caused it.
Say it spins a main bearing for some reason I would personally be surprised if the manufacturer did not require the dealer to record and provide the service documentation to back up the warranty claim. The dealer provides warranty support and repair to the customer but will follow a claims process to recover the cost of repair from the manufacturer, a manufacturer can decline payment if terms are not followed by the dealer.