Storage Stability of Brake Fluids in Tin, Steel and Glass Containers

摘要

The object of the study was to compare the storage stability of hydraulic brake fluids in tin, steel and glass containers. Thirty brake fluids approved under Federal Specification VV-B-680 were stored in 5 gallon steel drums, 1 gallon tin cans, and 1/2 gallon glass jugs for a period of 5 years. Periodically, corrosion and oxidation stability tests were conducted on the fluids. Sediment formation was observed. After storage for one year, an average of three fluids failed the corrosion test and six failed to meet the oxidation stability requirement. After five years the average number of failures increased to fifteen for the corrosion test and twenty for the oxidation stability test. Only four samples showed more than 0.05% sediment by weight, none of the samples showed more than 0.10%. There was no discernible pattern regarding commonality of failure under these test conditions. (Author)