ENGINE OPERATION - Operating Instructions 1 bearings and gives ample time to allow the oil pressure to stabilize. Carbon buildup in the combustion chamber Sticking of the valves in the cylinder head Reduced performance Damage to aftertreatment components page 46 and Engine Coolant Specifications on page 54 for recommended operating pressures and temperatures. Shut off the engine if any pressure or temperature does NOT meet the specifications. CAUTION The use of starting aids, such as ether, may result in damage to the engine and aftertreatment system. 3.
For coolant temperatures below 150°F (70°C), use a low gear and drive at moderate engine speed until the engine coolant has reached operating temperature. Do not let the engine idle longer than necessary. If the vehicle cannot be driven, an elivated idle speed may be used instead to warm the engine. Starting Procedure After Extended Shutdown or Oil Change Guideline on starting the engine after prolonged shutdown or oil change. After extended shutdown or an oil change follow the Normal Starting Procedure on page 23 . The engine will run at idle only until the minimum oil pressure is detected by the ECM.
It can take more cranking time to start the engine after an extended shut down or oil change. Continuous operation with engine coolant temperature above or below the engine coolant temperature specifications listed in Engine Coolant Specifications on page 54 ” can damage the engine. CAUTION Do not operate the engine at low idle for long periods of time when the coolant temperature is below the normal operating range. This could result in the following: Operating the Engine After the engine starts: Fuel dilution of the lubri- cating oil Monitor the oil pressure and coolant temperature gauges frequently. Refer to Engine Oil Capacities and Pressures on 24 Y53-1183-1E1 (04/16/18)