Viscosity Effects on Engine Wear Under High-Temperature, High-Speed Conditions General Motors Corporation

Format:

Conference/Event

Author/Creator:

McMillan, M.L., author.

Conference Name:

1978 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1978-11-13 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1978

Summary:

Four multigrade engine oils, containing the same base oil plus SE additive package but VI improvers of differing shear stability, were evaluated in 80 000 km of high-speed, high-temperature vehicle service.Bearing, piston ring and valve guide wear, as well as oil consumption, oil filter plugging and engine cleanliness were all worse for the engines operated on the low-shear stability oils. The wear differences were traced to differences in high-shear-rate viscosity, while the cleanliness, filter plugging and oil consumption differences occurred because of excessive wear or polymer shear degradation.These results suggest that engine oil viscosity should be specified under high-shear-rate conditions

Notes:

Vendor supplied data

Publisher Number:

780982

Access Restriction:

Restricted for use by site license