Look closely at the video from Richard. He is using the engine as a pump. There is a small loop going outside the case containing a filter. We know Roy is not using it so it is not really needed. Looking at my oil I would say that it can help but the blurry oil can also come from the assembly oil from the engine itself not mixing with the oil in the case.

As mentioned, it is something to think about which is easy to add with only finding a right pump.