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U.S. Army Evaluation of NATO Multi-graded Engine Oils
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Abstract
This paper discusses the United States effort in a cooperative NATO program investigating the performance characteristics of multigraded engine oils. Seven lubricants (one Grade 10W-30 oil, five Grade 15W-40 oils, and a 20W-40 oil) were evaluated using the diesel engine performance tests required for qualification of MIL-L-2104D engine oils. Two test oils (one Grade 15W-40 oil and the Grade 20 W-40 oil) met the 1G2 four-cycle diesel performance established for MIL-L-2104D specification. Three products (two Grade 15W-40 oils and the Grade 20W-40 oil) demonstrated acceptable 6V-53T, two-cycle, diesel performance. However, only the Grade 20W-40 oil showed acceptable performance in both tests.
Based on the results of the program, one conclusion is that multigraded 15W-40 and 20W-40 oils have the capability to demonstrate acceptable diesel engine performance as defined by the MIL-L-2104D engine specification. In addition, meeting requirements for either the two-cycle or the four-cycle engine test does not assure that a lubricant will demonstrate acceptable performance in both type engines. Therefore, lubricant specifications must include performance requirements for both two-cycle and four-cycle diesel engines.
Authors
Citation
Bowen, T. and Frame, E., "U.S. Army Evaluation of NATO Multi-graded Engine Oils," SAE Technical Paper 870401, 1987, https://doi.org/10.4271/870401.Also In
References
- Stavinoha, L.L. Eichelberger, J.R. Lestz, S.J. Tyler, J.C. “Lubricant Volatility Related to Two-Cycle Diesel-Engine Piston-Ring/Cylinder-Liner Wear,” presented at ASLE/ASME Lubrication Conference San Francisco, CA August 1980 J. ASLE 38 11 22 January 1982
- Military Specification, MIL-L-2104D “Lubricating Oil, Internal Combustion Engine, Tactical Service,” Government Printing Office Washington DC April 1983
- “Single Cylinder Engine Tests for Evaluating the Performance of Crankcase Lubricants, Part I: Caterpillar 1G2 Test Method,” Special Technical Publication 509A, American Society for Testing and Materials Philadelphia, PA 1979
- Military Specification, MIL-L-2104C “Lubricating Oil, Internal Combustion Engine. Tactical Service, Amendment 1,” Government Printing Office Washington DC August 1978
- “Engine Oil Performance and Engine Service Classification-SAE J183 Feb 80,” 1983 SAE Handbook Society of Automotive Engineers Warrendale, PA 1983
- Federal Test Method Standard 791C “Method 355T, Performance of Engine Lubricating Oils in a Two-Cycle Diesel Engine Under Cyclic, Turbo-Supercharged Conditions.”
- “Development of Military Fuel/Lubricant/Engine Compatibility Test,” Coordinating Research Council, Inc. Atlanta, GA January 1967
- Lestz, S.J. Bowen, T.C. LePera, M.E. “Fuel and Lubricant Compatibility Studies for Army High-Output, Two-Cycle Diesel Engines,” Interim Report AFLRL No. 80, AD A031885 National Technical Information Service Springfield, VA September 1976
- Moon, R.B. Montemayor, A.F. “Laboratory Evaluation of Multiviscosity Grade Engine Oils in US Army Diesel Engines,” Interim Report AFLRL No. 112, AD A108890 National Technical Information Service Springfield, VA September 1981
- Montemayor, A.F. Owens, E.C. Frame, E.A. Lestz, S.J. Bowen, T.C. “Laboratory Evaluation of Army Multiviscosity Grade Tactical Engine Oils,” SAE Paper 831719 Society of Automotive Engineers Warrendale, PA November 1983