You should be careful at choosing liquids for Citroen especially for vehicles having 1.9 motor. For 2000 Synergie engine it’s necessary to get normal temperature balance. You may use code of motor D8B(XUD9TF) and volume figure of 1.9 or just tell the 1997 year of production to buy liquid. There are some conditions in servicing cooling module at Citroen Synergie. To maintain cooling system you need 9 liters of Red coolant.
Providing you keep the rules 2.0 motor installed in Synergie of 2000 year will be long lasting. It will be advantageous to follow Citroen’s rules for 2002 Synergie service. A lot of RFN(EW10J4) motors are used long in Citroen cars but only with good service. To endure car life take only Red antifreeze and pour not more or less than 9 liters.