Sequence III E

SouthWest Research Institute San Antonio

The SouthWest Research Institute was chosen in the late 1980s to run a series of tests defined by the ASTM (Association for Testing and Materials) and the SAE, aimed at finally having a strictly standardised yard-stick for the evaluation of engine lubricants. For the last ten years, the SwRI has been running these tests for the international oil industry and the automobile industry day-in, day-out, and the results are accepted world-wide.

The results of the individual tests are matched against the known performance of “reference oils“. The tests are defined very exactly, and the results show up any deviation from the reference oil values in change in viscosity, hard and soft deposits etc.

The test certificate confirms that the QMI test was run fully in accordance with the test specification, and the results were registered with the US Chemical Manufacturers‘ Association, which means that they are officially recognised.

The test simulates a drive through the Nevada desert, towing a heavy caravan at a constant 110 kmh/70 mph. The test lasts 64 hours (equivalent to about 7.000 km/4.376 miles, so an oil change), at mid-day conditions. Thus the oil temperature is maintained at 149°C, the coolant at 115°C. The reference oil choosen for the QMI test was taken because it was known to just about hold out for the 64 hours in its “pure“ form. Thus, any undesirable effects from adding the QMI to it would have meant that the test would not have run the full time (This happens with poor quality oils regularly).

The values produced by the QMI test showed no negative features, thus showing that QMI plus oil is no more dangerous for the engine than oil alone. But, as a bonus, the test showed that the wear in the valve train was 88% lower than normal.

The full test report is 15 pages of figures. We show the page with the measurements of the valve train wear, and the page with the data from the reference oil. As can be seen from the lower value under “avg camshaft + lifter wear“ and“acceptance bands“, the next best wear reduction still produced 7.8 microns wear, compared with QMI’s 4.0 microns.


Gearbox | 50,000 miles | Sequence III E | High-density PTFE | Test results | What is an honest test?

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