# ISO 4925:1978 — Withdrawn and superseded ISO standards For ISO 4925:1978, item title is Road vehicles — Non-petroleum base brake fluid; status code is 9599; successor is ISO/CD 4925 | ISO 4925:2005; withdrawn / published date is 1978-09-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4925:1978 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Non-petroleum base brake fluid _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 4925 | ISO 4925:2005 - **Withdrawn / published date:** 1978-09-01 _(verified: appears in the quote below)_ ## What the source says > 10939,IS,,ISO 4925:1978,Road vehicles — Non-petroleum base brake fluid,Véhicules routiers — Liquide de frein à base non pétrolière,1978-09-01,1,"['75.120','43.040.40']",ISO/TC 22,9599,,"[10940,38513]","['en','fr']",22,"

Specifies the characteristics and the test methods for the non-petroleum base brake fluid used in the hydraulic brake systems. The brake fluid described is for use in brake systems equipped with seals, cups or double-lipped type gland seals made from natural rubber, styrene-butadiene rubber, and ethylene-propylene elastomer.

" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).