Advanced Placement (AP), 22.04.2020 23:31, 25linm

The motor oil in a car's engine will accumulate dirt over time, and it is recommended that the oil in a car's

motor be changed regularly. Car mechanics use an instrument called a hydrometer to determine if the oil

needs to be changed. Explain the steps in using a hydrometer and how a hydrometer uses specific gravity to

test the motor oil for dirt.

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(600)

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The motor oil in a car's engine will accumulate dirt over time, and it is recommended that the oil i...