Petroleum and related products. Determination of shear stability of lubricating oils containing polymers. Method using a tapered roller bearing Ingestion-build-78747 they might encounter problems and

they might encounter problems and hazards in various situations

the procedures can be used for fuel/water separators with higher or lower flow rates

This document is a collection of interpretations related to BS EN 81-20 up to BS EN 81-28

Test sequence reworked and description of the test sequences in form of a pseudo-code instead of flow charts

It is not applicable to zinc coatings applied:

Petroleum and related products. Determination of shear stability of lubricating oils containing polymers. Method using a tapered roller bearing Ingestion-build-78747 they might encounter problems and1 Scope This International Standard specifies a method of determining the shear stability of polymer containing lubricating oils by the four ball machine as specified in ISO 20623, but using a tapered roller bearing. The test results allow prediction of the in service permanent viscosity loss. NOTE Other International Standards exist which evaluate viscosity loss of polymer containing oils. The method specified within this International Standard