Question

Technician A says that all vehicles use the same oil viscosity. Technician B says that using the wrong viscosity oil can damage an engine. Which is right?

A A only
B B only
C Both A and B
D Neither A nor B

Answer 1

Technician B is correct that using the wrong viscosity oil can harm an engine. Different vehicles require specific oil viscosities, and multigrade oils like SAE 20W/50 provide appropriate lubrication across a range of temperatures.

Step-by-step explanation:

Technician B is correct in stating that using the wrong viscosity oil can damage an engine. Vehicles have specific requirements for oil viscosity that are determined by factors such as engine design and operating environment. A multigrade oil, such as SAE 20W/50, is designed to operate efficiently over a wider temperature range, ensuring proper engine lubrication during cold starts and high operating temperatures.

Using an oil with incorrect viscosity can lead to issues like difficulty in starting the vehicle in cold temperatures or inadequate lubrication at higher temperatures, which can ultimately cause engine damage.