According to the manual, what is done with the SAE number for engine oil?

• A. Recommend
• B. Require
• C. Verify
• D. Ignore

Answer: (A)

The main idea here is that engine oil viscosity guidance is presented as guidance, not a strict mandate. The manual tells you to use the SAE number that is recommended for the engine. Following this recommendation helps ensure the oil has the right viscosity to protect the engine and maintain performance under the pump’s operating conditions.

That’s why the best choice is to follow the recommendation for the SAE grade. It’s not described as something you must absolutely enforce in every situation (a hard requirement), nor as something you only verify separately, nor as something you should ignore. Using the recommended SAE number aligns with the engine manufacturer’s design and the manual’s guidance for proper lubrication.