I drive 30 to work every day, and 30 km back, but if I drive fuel saving the temperature is never over 50 degrees, the pointer doesn’t move once. Sometimes it goes a little bit upwards, but falls after a few km again to “0” If I speed up a little more violently and beyond 3000 it is also normal. Is that normal that it doesn’t get warm at 80-100km/h? And does it need more fuel or is the indicator under 50 still warm enough?