AA-036638-002_Lube Oil System - Plant Instrument Air Compressor_Rev.Rev.00 Minimum requirements for lube oil system Oil Reservoir stainless steel: Temperature indicator, Level gauge, thermostat, Electric heater, oil mist eleminatorand drain valve Pressure safety valve for Main oil pump and auxiliary oil pump - Main oil pump is shaft driven and the auxiliary oil pump is motor driven. Oil Cooler T..