Final answer:
The PTU does not transfer hydraulic fluid, but rather transfers power from the engine to the wheels in all-wheel-drive vehicles.
Step-by-step explanation:
PTU stands for Power Transfer Unit, which is a mechanical component used in some automobiles. The PTU itself does not transfer hydraulic fluid, but it transfers power from the engine to the wheels. It is responsible for distributing power between the front and rear axles in all-wheel-drive vehicles. The PTU contains gears and shafts that transfer mechanical power, not hydraulic fluid.