A Bench Scale Engine Test for Shear Stability of Multigrade Engine Oils 730485
A procedure is described which employs an air-cooled, 4-cycle, single-cylinder engine of the type often found on lawn and garden equipment, driven by an electric motor at 3100 rpm.
The equipment is simple, inexpensive, and requires a modest volume of sample. Results compare favorably with the shear stability tests of a series of 13 oils prepared and field-tested in a 78 vehicle fleet by Subsection B-1 of ASTM Division VII of Committee D 2. The degree of correlation is comparable to that observed in several tests conducted in full size laboratory engine stands, and superior to that recently reported for a variety of non-engine bench tests (pump rigs, sonic oscillator, dispersion mill).
Viscosity losses are also reported for a variety of commercial 10W-40 grade service station engine oils, when tested by this procedure.
Citation: Talbot, A., Wright, W., and Morris, H., "A Bench Scale Engine Test for Shear Stability of Multigrade Engine Oils," SAE Technical Paper 730485, 1973, https://doi.org/10.4271/730485. Download Citation
Author(s):
A. F. Talbot, W. A. Wright, H. I. Morris
Affiliated:
Sun Oil Co.
Pages: 9
Event:
National Automobile Engineering Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Electric motors
Test procedures
Fleets
Pumps
Tools and equipment
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