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An oil for a machine started outdoors in a Himalayan winter must be selected chiefly on its

  • A.pour point
  • B.flash point
  • C.saponification value
  • D.aniline point

Answer: A

The oil must still flow at the lowest ambient the machine will meet, or it cannot be pumped at start-up and the bearings run dry until it warms. The flash point governs the opposite end of the range and the other two say nothing about low-temperature behaviour.

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