WK86363 - New Test Method for Measuring the Gelation Propensity of Engine Oils After Treatment with Acidified Water

Work Item

ASTM WK86363

New Test Method for Measuring the Gelation Propensity of Engine Oils After Treatment with Acidified Water

1. Scope

This test method covers the determination of the tendency of a fully formulated engine oil to form a precipitate that causes an abrupt viscosity increase due to gelation. It simulates a problem that may be encountered after multiple cold starts or short drive times, resulting in a buildup of water contamination in the oil. After long storage periods, gelation of the oil/water/precipitate mixture can be observed.

Keywords

Engine oil; Filterability; Gelation; EOGT

Rationale

Requested by vehicle OEMs to be incorporated into new Engine Oil Specification for light duty vehicles in understanding the filter plugging tendency of oils. It would help to determine if oils would create filter plugging and cause failures in vehicles. Users would be engine oil formulators looking to meet specification limits.

Details

Developed by Subcommittee: D02.B0.07

Committee: D02

Staff Manager: Alyson Fick

Work Item Status

Date Initiated: 05-10-2023

Technical Contact: Yong Li McFarland

Item: 000

Ballot:

Status: