A Bench Scale Engine Test for Shear Stability of Multigrade Engine Oils
730485
02/01/1973
- Event
- Content
- 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.
- Pages
- 9
- 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.