What is the minimum value in the green oil temperature range?

What is the minimum value in the green oil temperature range?

• A. -40 C
• B. 0 C
• C. 40 C
• D. -20 C

Answer: (A)

The main idea is that the green segment on the oil temperature gauge shows the normal operating range for the engine oil temperature. The lower edge of that green band is the minimum value within the normal range. On this instrument, the scale begins at −40 C, so the green range starts there. That means the smallest temperature that can still be considered within the normal operating band is −40 C, even though the engine oil won't typically run there during normal operation once the engine is up to speed. The other numbers would lie above that lower bound, but they are not the starting point of the green range.

The main idea is that the green segment on the oil temperature gauge shows the normal operating range for the engine oil temperature. The lower edge of that green band is the minimum value within the normal range. On this instrument, the scale begins at −40 C, so the green range starts there. That means the smallest temperature that can still be considered within the normal operating band is −40 C, even though the engine oil won't typically run there during normal operation once the engine is up to speed. The other numbers would lie above that lower bound, but they are not the starting point of the green range.