Effect of VI Improver on the In-Service Viscosity of Hydraulic Fluids

750693

02/01/1975

Event
National Fuels and Lubricants and Transportation Meetings
Authors Abstract
Content
A vane pump rig of the type used in ASTM D-2882 was used to study the permanent and temporary shear loss characteristics of hydraulic fluids containing a variety of VI improvers. The influence of polymethacrylate VI improver molecular weight on performance was studied. Severity of hydraulic oil service was assessed relative to that tor automotive engine oils, and the suitability of common VI improvers is discussed. It was shown that shear stable polymethacrylate VI improvers can provide a high level of performance for extended periods of time.
Meta TagsDetails
DOI
https://doi.org/10.4271/750693
Pages
12
Citation
Kopko, R., and Stambaugh, R., "Effect of VI Improver on the In-Service Viscosity of Hydraulic Fluids," SAE Technical Paper 750693, 1975, https://doi.org/10.4271/750693.
Additional Details
Publisher
Published
Feb 1, 1975
Product Code
750693
Content Type
Technical Paper
Language
English