Cold-start, short-trip driving causes the accumulation of fuel, water, and other contaminants in oil. In this type of service the engine oil degrades at a rapid rate. To gain a better understanding of the degradation, the oil under these conditions was observed and photographed through a transparent oil pan. In addition the oil was analyzed to provide a quantitative measure of the degradation. Oil analysis results confirmed what was observed visually; once oil became warmer, sludge and contaminants were removed, and many of the oil's properties (acid number, pentane insolubles, water in oil, etc.) improved.
Observations through a transparent oil pan during cold-start, short-trip service
Beobachtungen durch durchsichtige Ölwanne während des Kaltstarts und bei kurzen Fahrten
SAE-Papers ; 1-17
1991
17 Seiten, 23 Bilder, 3 Tabellen, 9 Quellen
Aufsatz (Konferenz)
Englisch
MOTOROEL , OELWANNE , KALTSTART , SICHTPRUEFUNG , STADTVERKEHR , KRAFTSTOFF , WASSER , CHEMISCHE ANALYSE , VERSCHMUTZUNG , VISKOSITAET , OTTO-MOTOR
Observations through a transparent oil pan during cold-start, short-trip service
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