From the graph, and the experiment of Dynamic viscosity values for engine oil SAE 10W-30 at room temperature. Using the rotor speed and Dynamic viscosity value of 0.054 average Pa * s, which is close to the value of Dynamic viscosity used rotor No. 2 and No. 3, No.2, which should be used if another extension is used to measure the viscosity range was born to cause unexpected movement and speed that should be used is 1.5 round speed rpm.
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