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The Sequence IID Engine Oil Test

1978; Linguagem: Inglês

10.4271/780931

2688-3627

J. J. Rodgers, Richard H. Kabel,

Power Transformer Diagnostics and Insulation

The American Society of Testing and Materials Sequence IIC test was established to evaluate the rust and corrosion protection provided by gasoline engine oils. It is one of several tests used to define SE-quality engine oils. The test utilizes a 1967, 7.0 L Oldsmobile engine which is no longer available. A program has been implemented to replace this engine with a 1978, 5.7 L Oldsmobile engine. The new test, called Sequence IID, also evaluates engine oil rust and corrosion protection, and it correlates with both Sequence IIC engine test and passenger car short-trip test results. The Sequence IID test procedure is essentially the same as the Sequence IIC procedure, although some changes in test operational limits were necessary due to differences in engine displacement. In addition, since the same 5.7 L engine is also used in the Sequence IID test, the commonality of equipment permits laboratories to conduct both tests with little increase in parts inventory. The Sequence IID test generates fewer rust deposits than the sequence IIC test. To compensate for this difference and maintain oil quality equivalence, the minimum rust rating for SE-quality oils has been increased from 8.4 in the Sequence IIC test to 8.5 in the Sequence IID test.