Nilfisk-Advance City Ranger 2250 Operator's Manual page 45

Service and maintenance
3.5 Engine maintenance - continued
Recommendations concerning oil
For best engine performance, we recommend approved
Perkins engine oils. Other high-grade oils may be
used if they have API CF, CF-4, CG-4 or CH-4 engine oil
classification. Never use special additives.
1
NB
Oil types
Lubricating oil viscosity must be suitable for the ambient
temperature range for the climate in which the machine is
to operate. (Picture 1)
45
Operator's Manual City Ranger 2250