Oil catch tank
Volume. All engines and their use are different, so it is impossible to say how quickly the oil catch tank fills. Choose the size according to how often you want to empty the tank.
Size. Smaller volume = smaller size = easier to mount.
Connections. AN-fittings can be freely adapted. However, hose connectors cannot be adjusted.
Products
Oil catch can, Breather tank, Oil breather, Oil catch tank
How often does an oil catch tank need to be emptied?
There is no right answer and depends entirely on factors such as rpm, piston ring blow by, size / placement of vent holes and more.