What alert must be marked on the Oil Analysis Request (DD 2026) for immediate processing?

The alert that must be marked on the Oil Analysis Request (DD 2026) for immediate processing is indicated by red borders. This marking is crucial as it signifies the urgency of the request, ensuring that it captures the attention of the processing staff and prompts swift action. The use of red as a color for alerts is a common practice in various fields, including maintenance and production control, as it conveys a sense of priority and necessitates immediate attention to prevent further issues or damages.

Other color markings, such as blue, yellow, or green, do not carry the same level of urgency associated with red that is understood universally in the context of alert systems. Each color may still serve a purpose but does not communicate the same immediate need for action that red does, thereby reinforcing the requirement for prompt processing of the oil analysis request when it features red borders.