Final answer:
The operating limit for oil temperature in an engine can reach up to 200°C in extreme conditions, but typically should not exceed the operating range of the car radiator, which is above 95.0°C. A specific temperature limit cannot be provided without additional context regarding the engine or vehicle in question.
Step-by-step explanation:
The operating limit for oil temperature in an engine is critical to understand because it ensures that the oil remains effective as a lubricant without becoming too thin, which happens when the oil's viscosity decreases due to high temperatures.
The oil in an automobile engine needs to lubricate efficiently across various temperatures, and the maximum operating temperatures can reach up to 200°C under extreme conditions, such as in the Mojave Desert during peak summer months. Moreover, most car radiators operate above 95.0°C, suggesting that the oil temperature generally should not exceed this range during normal operations. However, there is no specific answer provided to the question 'What is the operating limit for OIL TEMP?' without additional context about the specific engine or vehicle model being referenced.