ASTM D5967 Test Method for Evaluation of Diesel Engine Oils in T-8 Diesel Engine
12. Report
12.1 Reporting Test Results - Report forms are shown in Annex A1. Fill out forms in accordance with the formats shown in Annex A7.
12.1.1 During the test, if the engine is shut down or operated out of test limits, record the engine hours, time, and date on Form 6 (Fig. A1.7). In addition, note in the comment section all prior reference oil tests that were deemed operationally or statistically invalid or aborted.
12.1.2 When reporting reference oil test results to the TMC, transmit by facsimile the test Cover Sheet and Forms 1,2,4,6, and 8 (reference Annex A1) and any other supporting information to the ASTM TMC within five days of test completion. Mail a copy of the final test report within 30 days of test completion to the ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206–4489. Electronic transfer of test results to the ASTM TMC is also permitted for approved laboratories (see 12.3).
12.2 Deviations from Test Operational Limits - Report all deviations from specified test operational limits on Form 6 (Fig. A1.7) under Other Comments.
12.3 Electronic Transmission of Test Results - Electronic transfer of the test report can be done utilizing the ASTM Data Communications Committee Test Report Transmission Model (see Section 2–Flat File Transmission Format) available from the ASTM TMC.
12.4 Plots of Operational Data - Graphical representation of operational data is required. Place graphs on 8.5 by 11-in. portrait oriented paper. The x-axis (hours) shall be 5 in. in length and segmented into 10-h increments with hour labels at 50-h increments.
13. Precision and Bias
13.1 Precision - Test precision is established on the basis of operationally valid reference oil test results monitored by the ASTM TMC. The research report contains industry data developed prior to establishment of this test method. Practice E 29 was used as a guide to develop this data.
13.1.1 Repeatability (r) is defined as the difference between successive results obtained by the same operator with the same engine under constant operating conditions on the same oil, would, in the long run, in the normal and correct conduct of the test method, exceed the values shown in Table 4 in only one case in twenty.
13.1.2 Reproducibility (R) is defined as the difference between two single and independent results obtained by different operators working in different laboratories on the same oil would, in the long run, in the normal and correct conduct of the test method, exceed the values shown in Table 4 in only one case in twenty.
13.1.3 The test precision as of January 1, 1998, is shown in Table 4.
13.1.4 The TMC can furnish current precision information.
13.2 Bias - Bias is determined by applying an accepted statistical technique to reference oil test results and when a significant bias is determined, a severity adjustment is permitted for non-reference oil test results (see 9.8.1).
14. Keywords
14.1 diesel engine oil; lubricants; soot; T-8 diesel engine; viscosity
