Used Mineral-based Crankcase Oil

What is Used Mineral-based Crankcase Oil?

CAS#: 008002-05-9

Used mineral-based crankcase oil is the brown-to-black, oily liquid removed from the engine of a motor vehicle when the oil is changed. It is similar to unused oil except it contains additional chemicals from its use as an engine lubricant.

The chemicals in oil include hydrocarbons, which are distilled from crude oil, and various additives that improve the oil's performance. Used oil also contains chemicals formed when the oil is exposed to high temperatures and pressures inside an engine. It also contains some metals from engine parts and small amounts of gasoline, antifreeze, and chemicals that come from gasoline when it burns inside the engine.

The chemicals found in used mineral-based crankcase oil vary depending on the brand and type of oil, whether gasoline or diesel fuel was used, the mechanical condition of the engine that the oil came from, and the amount of use between oil changes. Used oil is not naturally found in the environment.

Related Resources for Used Mineral-based Crankcase Oil

• Public Health Statement
  Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.
  
• ToxFAQ
  Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.
  
• Toxicological Profile
  Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.