What is the primary purpose of the oil pressure indicator in the T-6 aircraft?

The primary purpose of the oil pressure indicator in the T-6 aircraft is to display oil pressure status. This indicator provides essential information about the lubrication system of the engine. Proper oil pressure is critical for ensuring that the engine is adequately lubricated, preventing overheating, and avoiding damage due to metal-to-metal contact. A reading indicating low oil pressure can alert the pilot to potential issues that could affect engine performance, necessitating immediate attention and possibly a precautionary landing to prevent engine failure. The effectiveness of an aircraft's engine largely depends on maintaining appropriate oil pressure, which the indicator helps monitor.