Cooperative Program Evaluation of NATO Multigraded Diesel Engine Oils

摘要

The information contained in this report covers the United States portion of a cooperative NATO program investigating the performance characteristics of multigraded engine oil. Seven lubricants (one Grade 10W-30 oil, five Grade 15W-40 products, 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 product and the Grade 20W-40 oil) met the 1G2 four-cycle diesel performance established for MIL-L-2104D specification. Three products (two Grade 15W-40 lubricants and the Grade 20W-40 oil) demonstrated acceptable 6V53T, two-cycle diesel, performance, However, only the Grade 20W-40 oil showed acceptable performance in both tests.