Owners manual

QSB4.5 and QSB6.7 Operating the Engine
Section 1 - Operating Instructions Page 1-11
Operating the Engine
Normal
If equipped, monitor the oil pressure and coolant
temperature gauges frequently. Refer to Lubricating Oil
System specifications and Cooling System specifications,
in Maintenance Specifications (Section V) for
recommended operating pressures and temperatures.
Shut off the engine if any pressure or temperature does
not meet the specifications.
Continuous operation with engine coolant temperature
above or below the engine coolant temperature
specifications listed in Maintenance Specifications
(Section V) can damage the engine.