Patent ID: 9593289
Date: 2017-03-14
CPC Classifications: B60T,C10M,C10N,C23F,G01N

Claim:
1. A method of testing hydraulic fluid in a hydraulic system, the method comprising the steps of: testing a sample of a hydraulic fluid, wherein the hydraulic fluid is in a hydraulic system; evaluating at least one test result to quantify a metric pertinent to the hydraulic fluid; based on the metric, determining that a corrosion inhibiting hydraulic fluid additive should be added to the hydraulic fluid; and in response to determining that the corrosion inhibiting hydraulic fluid additive should be added to the hydraulic fluid, adding the corrosion inhibiting hydraulic fluid additive to the hydraulic fluid without removing the hydraulic fluid from the hydraulic system; wherein the corrosion inhibiting brake fluid additive comprises a copper corrosion inhibitor comprising an organic compound comprising an azole.