Volkswagen Golf IV engine is warming up very slowly

The reason for the slow progress of the Volkswagen Golf IV engine is usually in the thermostat, specifically its specific attachment. Plastic leg of Golf IV thermostat is tendency to break during operation. This causes the thermostat to work incorrectly, and the coolant circulates only in a large circle. In addition, the failure of the jumper in the thermostat may result in slow progress.