Try adding a stop leak fluid additive and see if that helps the noise, because if it does, this means that a seal is on its way out. Hope this was helpful. You have a 10 dollar problem or you have a full blown pump replacement on your hands.
Mind control (also known as brainwashing, reeducation, brainsweeping, coercive persuasion, thought control, or thought reform) is a theoretical indoctrination process which results in an impairment of autonomy, an inability to think independently, and a disruption of beliefs and affiliations.
So, putting it simply, the cerebral cortex is a highly-sophisticated part of our nervous system that controls human behavior, thought and emotion in general.