EN ISO 12156-1:2016

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Sampling
8 Preparation and calibration
9 Test procedure
10 Measurement of wear scar
11 Test results
12 Precision
13 Test report
Annex A (informative) - Measurement of HFRR wear scars
Annex B (informative) - Major changes to the former edition
        of this part of ISO 12156
Bibliography

ISO 12156-1:2016 specifies a test method using the high-frequency reciprocating rig (HFRR), for assessing the lubricating property of diesel fuels, including those fuels which may contain a lubricity-enhancing additive. It defines two methods for measurement of the wear scar; Method "A" ? Digital camera, and Method "B" ? Visual observation.This test method applies to fuels used in diesel engines.NOTE It is not known if this test method will predict the performance of all additive/fuel combinations, including paraffinic fuels for which no additional correlation testing has been performed. Nevertheless, no data has been presented to suggest that such fuels are not within scope.