C. Residuals are filtered to remove impurities.
D. A residual is what is left after all the distillates have been vaporized.
Question 4
What is oil viscosity?
Select one:
A. Viscosity is an oil additive that determines how freely oil flows
B. Viscosity is a measure of the relative lubricity of the oil.
C. Viscosity is a measure of the heating capacity of the oil.
D. Viscosity is a measure of the thickness of the oil.

Question

GinnyAnswer · Answer

Viscosity is defined as a measure of an oil's thickness and its resistance to flow. It plays a key role in the performance of the oil, especially in lubrication. The correct answer is that viscosity measures the thickness of the oil. ;

Answered by GinnyAnswer | 2025-07-06

Anonymous · Answer

Viscosity measures the thickness of oil and its resistance to flow, which is crucial for oil performance in machinery and engines. The correct answer is option D: Viscosity is a measure of the thickness of the oil. 
 ;

Answer (2)

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