KAMAZ 5490 Operation Manual page 196

Table 1 - Application conditions for hydraulic oils applied in vehicle hydraulic systems
Viscosity grade VG
according ISO
at 40 °С
15
22
32
46
* It is highly recommended to use oil cooler when operating at temperatures above 65 °С.
Note - the specified temperature ranges refer to the oil temperature, and not to the ambient air temperature.
Note - For hydraulic systems with slightly increasing temperature, choose oils which viscosity is at least 100 mm²/sec. at
the lowest start temperature. This eliminates slow operation, cavitation and adverse events.
For extremely cold climate conditions with temperatures below minus 30°С use hydraulic fluids with high viscosity in-
dex(aircraft fluids with the viscosity index > 250). If the the operating temperature is not reached, you need to heat the oil
before use.
The lowest temperature of
Viscosity index the short start with a vis-
of 750 mm²/c
minus 23 °С
100
100 minus 17 °C
minus 10 °С
100
minus 4 °С
100
Oil temperature with
minimum viscosity value
cosity value
A3-4
Oil temperature with
maximum operating
viscosity value of
of 100 mm²/с
0 °C
+ 9 °C
+ 17 °C
+ 24 °C
12 mm²/с
+ 45 °C
+ 55 °C
+ 65 °C
+ 65 °C*