Assertion: motor oil | /r/MadeOf | additive
Facets:
value: unlike air-compressor oil
type: OTHER
value: often
type: TEMPORAL
Source sentences:
text: Motor oil contains additives.
text: Unlike air-compressor oil, motor oil often contains additives that help protect engines by preventing the oil from deteriorating under high operating temperatures.
text: Although motor oils contain additives that keep them stable at temperatures below 0ºF or above 100ºF, extreme fluctuations can affect their viscosity or thickness and, therefore, their ability to protect your engine.