This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
DOES THE MS TEST PREDICT FIELD PERFORMANCE?
Annotation ability available
Sector:
Language:
English
Abstract
The major automobile makers have jointly developed a series of laboratory engine-test procedures for appraising motor oils blended for API Service Classification MS. How well the new test predicts field performance has not been satisfactorily answered.
Twelve oils run in 40 vehicles for a total of over 2 million miles have been evaluated in the MS Test. Because different engines in the same field test responded differently to identical oils, the laboratory test could not be expected to correlate with all field results. However, the ranking of oils in each field test was correctly predicted for at least one make of engine as regards over-all sludge, ring plugging, screen clogging, ring sticking, and rust. Piston varnish and wear were incorrectly predicted.
Duplications occur in the MS procedure and should be eliminated. For predicting the results for our two field tests, MS Sequences I and IV tell the same story for wear; MS III and V tell the same story for engine cleanliness. The MS Test satisfactorily supplants several engine tests long used in motor-oil development work, but it is not broad enough to cover all aspects of such development.
Authors
Citation
COLYER, C. and TOM, T., "DOES THE MS TEST PREDICT FIELD PERFORMANCE?," SAE Technical Paper 600116, 1960, https://doi.org/10.4271/600116.Also In
References
- Light G. E. Colyer C. C. “Why the ‘MS’ Test?” presented to the Independent Oil Compounders Association Chicago, Illinois September 1959
- Report of AMA Ad Hoc Committee of G-IV, Technical Committee B, ASTM D-2 “AMA Test Sequence Recommendations for Oils Meeting Service MS” May 1958
- Gjerde M. D. “Development of the API Engine Service Classification for Motor Oils,” presented to the A.P.I. Lubrication Committee Chandler, Arizona May 1959
- LaGroix L. D. Kalinowski M. L. “One Test Evaluates Motor-Oil Contribution to Combustion Deposits,” presented to the S.A.E Chicago October 1959
- Socolofsky J. F. Lowther H. V. “Status of the API MS Service Classification from a Research Viewpoint,” presented to the A.P.I. Lubrication Committee Chandler, Arizona May 1959