Yes, but did the tail-light leak oil?
I had an old Triumph motorcycle once that developed a crack in the crankcase breather/overflow tube where it ran along the rear fender. The leak was in such a location that when oil mist leaked out through the crack it entered the tail light assembly.
At some point prior to me discovering the crack, the tail light bulb burned out (not an unusual occurrence on those paint-shakers). When I unscrewed the lens and removed it to replace the bulb about 4 ounces of oil leaked out.
Sounds like my '72 Corvette. I was about 4 miles up the road after leaving the dealer and noticed that the oil pressure gauge was fluctuating and oil was flowing down the console towards my feet. Someone at the factory forgot to tighten everything down. Nothing like bringing a car in for service with less than 10 miles on it.