Don’t underestimate the importance of Citroen’s 2.0 engine cooling system. In 2013 the company produced vehicles with 1.6 engine having code of 9HR(DV6C). For 2011 DS4 engine it’s necessary to get normal temperature balance. It’s important to use 0-0 liters of coolant which has Red color. For sufficient use of Citroen DS4 you need to use suitable antifreeze.
So better use Citroen’s advice for servicing 2012 DS4. A lot of 9HR(DV6C) motors are used long in Citroen cars but only with good service. If you choose other than Red coolant or use less than 0-0 liters, you can’t expect normal work. Providing you keep the rules 1.6 motor installed in DS4 of 2012 year will be long lasting.