Even though hydraulic oils are made to withstand significant heat, and can even be heated up to their boiling point and still maintain their consistency and handling characteristics, they should not be allowed to get too hot they will break down, and the viscosity will increase dramatically, and they will lose the ability to lubricate moving parts, either of which can lead to an expensive repair or a mechanical failure.
Every now and then we change the decor of our apartment, buy new furniture and accessories. But the modifications, which concern the child's room, do not result from our preferences, but from the fact that the child simply grows up.