There is no chance 2008 107 engine will work efficiently with bad cooling. Make sure you service system at Peugeot with installed 1.0 engine correctly. You may use code of motor 1KR (384F) and volume figure of 1.0 or just tell the 2011 year of production to buy liquid. It’s important to use 4 liters of coolant which has Red color. For sufficient use of Peugeot 107 you need to use suitable antifreeze.
Look at Peugeot’s requirements and make your 2010 107 serve longer and with no problem. To endure car life take only Red antifreeze and pour not more or less than 4 liters. Every Peugeot owner should remember that engines with code 1KR (384F) are quite demanding. Produced in 2011 the 1.0 engine in 107 model will serve longer by this.