6-23
TIPS ON SAFE AND SMOOTH OPERATION
Engine Coolant
To prevent the engine damage due to
freezing of the engine coolant, mix the
coolant and water to be an appropriate
concentration.
Changing the Engine Coolant
→ Refer to page 7-44
Preparing Engine Coolant
→ Refer to page 7-40
Recommended Fluids, Lubricants and
Diesel Fuels → Refer to page 7-242
Replacing the Engine Oil
Transmission Oil (ZF6S1000/ZF9S1110
)
When Starting the Vehicle in Cold Regions
The oil used in the ZF6S1000/ZF9S1110 transmission has a low-temperature limit.
If you start to drive the vehicle under the ambient temperature of below -15°C (5
°F), replace the transmission oil with an appropriate one which has sufficient low
temperature performance. Another approach is to warm the transmission before
starting the engine. When warming the transmission, do not use hot air with a
temperature exceeding 130°C (266°F).
Changing the Engine Oil and Oil Filter
→ Refer to page 7-35
Recommended Fluids, Lubricants and
Diesel Fuels → Refer to page 7-242
Engine Oil and Gear Oil Viscosity
Charts → Refer to page 7-247
The engine oil tends to thicken with lowering temperatures. Use engine oil with a
viscosity suited to ambient temperature.
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