OMR
Sikorsky and the FAA chose to go with the first sentence "Unless such failures are extremely remote,..." rather than the 30 minutes bit, though it begs the question how such an event can be shown to be extremely remote before an aircraft has even entered service.
But its far too early to say that it was a complete loss of lubricant - IMHO its more likely to be some other transmission malfunction (if indeed it even was a transmission malfunction).
HC