Lubrizol 7067c |link|

It acts as the "salt and pepper" for the base oil. A blender takes Group I or Group II mineral oils (the base liquid), adds a specific percentage of 7067C (usually around 0.8% to 1.0% by weight), and the result is a premium hydraulic fluid capable of extending the life of equipment by thousands of hours.

One of the most interesting aspects of the 7067C story is its reliance on zinc. lubrizol 7067c