# ISO 20844:2004 — Withdrawn and superseded ISO standards

For ISO 20844:2004, item title is Petroleum and related products — Determination of the shear stability of polymer-containing oils using a diesel injector nozzle; status code is 9599; successor is ISO 20844:2015; withdrawn / published date is 2004-03-08, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20844:2004 _(verified: appears in the quote below)_
- **Item title:** Petroleum and related products — Determination of the shear stability of polymer-containing oils using a diesel injector nozzle _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20844:2015
- **Withdrawn / published date:** 2004-03-08 _(verified: appears in the quote below)_

## What the source says

> 34281,IS,,ISO 20844:2004,Petroleum and related products — Determination of the shear stability of polymer-containing oils using a diesel injector nozzle,Pétrole et produits connexes — Détermination de la stabilité au cisaillement de fluides contenant des polymères au moyen d'un injecteur pour moteur diesel,2004-03-08,1,['75.080'],ISO/TC 28,9599,,[63726],"['en','fr','ru']",9,"<p>ISO 20844:2004 specifies a method to assess the resistance to shear stresses applied to mineral oils, synthetic oils and other fluids containing polymers, when passed through a specified diesel injector nozzle. The shear stability is measured by the change in viscosity of the fluid under test, brought about by the pol

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).