This is the 10050th most frequent Polish word.
benzyną
The Polish word "benzyną" means "gasoline" or "petrol" (instrumental case).
Direct object in an action of refilling fuel.
Musimy uzupełnić benzynę przed podróżą.
We need to refill the gasoline before the trip.
Instrumental case as a property of the functioning vehicle.
Samochód działa na benzynę, a nie na olej napędowy.
The car runs on gasoline, not on diesel.
Instrumental case indicating the cause of an effect.