Type of Notification
regular notification
Date of Distribution
WTO Country
Agency Responsible
Uganda National Bureau of Standards
Notified Document Details
<p style="margin:2px !important;">DUS 2054:2018 Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT, First Edition.</p>
ICS Code
Covered Products
<p style="margin:2px !important;">Engine oils</p>
Description of Content

This Draft Uganda Standard covers the test method for the procedure to determine the mass of deposit formed on a specially constructed test rod exposed to repetitive passage of 8.5g of engine oil over the rod in a thin film under oxidative and catalytic conditions at 285°C. The range of applicability of the Moderately High Temperature Thermo-Oxidation Engine Test (TEOST MHT) test method as derived from an interlaboratory study is approximately 10mg to 100mg. However, experience indicates that deposit values from 1mg to 150mg or greater may be obtained.

This test method uses a patented instrument, method and patented, numbered, and registered depositor rods traceable to the manufacturer and made specifically for the practice and precision of the test method.

Relevant Documents
  1. ASTM D4485  Specification for Performance of Active API Service Category Engine Oils
  2. ASTM D6335  Test Method for Determination of High Temperature Deposits by Thermo-Oxidation Engine Oil Simulation Test


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