Original Mugen Seiki Silicone Oil with a viscosity of 550cps are used in Öldruckstoßdämpfern. Temperature stable silicone oil which even with severe temperature fluctuations retains its viscosity. It also comes with this oil resistant to ageing, it keeps stored away, even after extensive time its the viscosity. Included in the box contents include 1 Silicone Oil 550cps with 50 ml.