Who is correct regarding oil pressure in an engine during cold conditions?

In cold conditions, oil pressure in an engine tends to be higher due to the increased viscosity of the oil. When the engine is started, cold oil is thicker and does not flow as freely as warm oil. This thicker oil creates higher resistance to flow, leading to an increase in oil pressure until the oil warms up and begins to thin out. Technician A likely recognizes this characteristic behavior of engine oil in cold weather, understanding that oil pressure readings can be elevated at startup when the oil is cold.

It's important to understand that as the engine reaches its normal operating temperature, the oil warms and becomes less viscous, generally resulting in a decrease in oil pressure. This is a normal part of engine operation and showcases the importance of monitoring oil pressure across different temperatures to ensure optimal engine performance.