KS ISO 4263-3: 2015

Petroleum and related products - Determination of the ageing behaviour of inhibited oils and fluids using the TOST test Part 3: Anhydrous procedure for synthetic hydraulic fluids.

Specifies a method for the determination of the ageing behaviour of synthetic hydraulic fluids of categories HFDU, HEES, HEPG and HETG as defined, for example, in ISO 12922[1] and ISO 15380[2].