Which statement about transmission oil temperature is true?

Which statement about transmission oil temperature is true?

• A. 0-115 °C
• B. 115 °C max
• C. 100-110 °C
• D. 120-130 °C

Answer: (A)

Transmission oil must stay within a defined safe temperature window to keep lubrication effective and prevent thermal breakdown. The acceptable range is 0 to 115 °C, covering both the cold-start phase and the normal operating heat up to the upper safety limit. This makes the 0–115 °C range the best choice because it represents the full, safe operating span. The other options don’t fit: a single maximum (115 °C) omits the lower bound, a narrow band like 100–110 °C ignores cold-start conditions and normal variation, and a higher range (120–130 °C) exceeds what’s considered safe for the oil and transmission components.

Transmission oil must stay within a defined safe temperature window to keep lubrication effective and prevent thermal breakdown. The acceptable range is 0 to 115 °C, covering both the cold-start phase and the normal operating heat up to the upper safety limit. This makes the 0–115 °C range the best choice because it represents the full, safe operating span. The other options don’t fit: a single maximum (115 °C) omits the lower bound, a narrow band like 100–110 °C ignores cold-start conditions and normal variation, and a higher range (120–130 °C) exceeds what’s considered safe for the oil and transmission components.