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IP 450: Diesel fuel – Assessment of lubricity using the high‑frequency reciprocating rig (HFRR) – Part 1: Test method (ISO 12156‑1:2018)
- Method adopted/last revised: 2020
- Method reapproved: None
- REF/ISBN: IP450-7250659
- Status: Current
- First printed in STM books: January 2020
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This document specifies a test method using the high-frequency reciprocating rig (HFRR), for assessing the lubricating property of diesel fuels, including those fuels which could 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.
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