Engine Operation- 4.5 L Engines Break-In Service Before starting, fill engine with seasonal viscosity grade oil and with coolant meeting specifications. (See DIESEL ENGINE OIL and DIESEL ENGINE COOLANT SPECIFICATIONS in Fuels, Lubricants, and Coolant Section.) RG12692 –UN–07FEB03 1. During the first 20 hours, avoid prolonged periods of engine idling or sustained maximum load operation. Warm-up engine carefully and operate at normal loads. If engine will idle longer than 5 minutes, stop engine. Check Engine Oil Level Daily 2. Check oil level daily or every 10 hours during engine break-in period. If oil must be added during this period, use seasonal viscosity grade oil.
(See DIESEL ENGINE OIL in Fuels, Lubricants, and Coolant section.) OURGP11,0000169 –19–06FEB04–1/3 3. Watch oil pressure (A) and coolant temperature (B) closely during break-in period. Also check coolant level daily or every 10 hours and check for leaks. 4. Check poly-vee belt for proper alignment and seating in pulley grooves. RG6574 –UN–17FEB03 A—Oil Pressure Gauge B—Coolant Temperature Gauge Oil Pressure and Coolant Temperature Gauges (Earlier Engines) RG13361 –UN–06FEB04 Oil Pressure and Coolant Temperature Gauges (Later Engines) Continued on next page OURGP11,0000169 –19–06FEB04–2/3 20-2 021604 PN=117