Volkswagen Amarok 2011 90000 miles
When speeding up on a highway, the temperature gauge reaches the maximum, even though the engine cooling fan is working. So I stop and wait for about 10 minutes until it cools down to 110°C. When driving at 60 mph or more, the coolant level raises and falls, losing about 250ml. In the agency, I've been told there is nothing wrong with the vehicle. Can anyone help me please? My car is an Amarok 2011 std Highline.