Technician a Says That Viscosity Index (VI) Improvers Thicken Oil

question 6

Multiple Choice

Technician A says that viscosity index (VI) improvers thicken oil when it becomes hot and thins it when it becomes cold. Technician B says that VI improvers thin oil when it's hot and thicken it when it's cold. Who is correct?

• A)Technician A"
• B)Technician B"
• C)Both A and B
• D)Neither A nor B"

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