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Sump refers to the space in the oil pan under the crankshaft that holds the oil like a sump.

  • The sump functions as an infiltration basin that is used to keep the liquid free from water and other contaminants. 
  • The oil pan is usually made of plastic or metal. It is shaped to fit on the bottom of the block. A gasket is installed between the pan and block tp seal the jpoint
  • and prevent oil leaks.
  • The bottom of the block with the oil pan forms the crankcase
  • The oil pan usually hols form 3 to 9 quarts or 3 up to 8 liters of oil depending on the engine. An oil pump sends the oil from the oil pan to the moving engine parts.