You would certainly have to know that the roller is not microfibre, that does NOT work at all for oiled floors. I suspect it is microfibre and therefore I would leave it alone without a clear recommendation from Dyson for "oiled floors". Hard floors alone is even enough of a specification.
Dear Anonymous, the Dyson V15s Detect Submarine can be used on all hard floors, thus also on oiled parquet. The roller only releases a small amount of water, so the floor is only picked up damp. We hope this has helped you. Best regards from the Dyson Switzerland team