PRODUCT INFO:
This is a 75ml bottle of Ultimate Racing  cSt silicone diff oil used with oil filled shocks. Ultimate shock fluid is made by Modelix Racing from 100% pure silicone oil
 
The Ultimate fluids come in a cSt rating which is a more linear rating for the oils. The higher the viscosity number of the oil, the thicker the oil is. Ultimate Racing silicone oil content antifriction additives to ensure shock absorbers useful life and minimize viscosity changes.