The baffle system in the tank could catch the oil and moisture from PCV/CCV air, prevent misfires due to carbon accumulation, keep the engine clean, and prolongs engine life.
Filtered Breather that traps oil while allowing air to escape freely, and the baffle system in the oil tank also could filter the air, reduce oil and gas into the intake manifold.
The capacity of the tank is 750 ml (about 25.3 oz), which is easy to clean and generally fit for most cars.