Volvo VHD Automobile User Manual


 
206 Engine Start and Operation
During cold weather, give more atten-
tion to the condition of the batteries.
Test them frequently to ensure suffi-
cient power for starting. A dead
battery may freeze.
Fuel cloud point is the temperature at
which wax crystals become visible,
which is generally above the pour
point of the fuel. To keep the fuel fil-
ter elements from plugging with wax
crystals, the cloud point should be no
higher than the lowest ambient temper-
ature at which the engine must start.
To prevent wear and possible damage to the
engine when it is cold, gradually bring it up
to operating temperature before operating at
high engine speeds or full load. After start-
ing and before moving the vehicle, run the
engine at 800 to 1000 r/min for 3 to 5 min-
utes. Operate at partial engine load until the
coolant temperature reaches 165
F (75 C).
Engine Block Heater (option)
An electric engine block heater can be in-
stalled for keeping the coolant hot when the
vehicle is parked. The heater is mounted
through the side of the engine block with
the heater coils in the coolant jacket. The
heater does not interfere with normal oper-
ation and can be permanently installed.
The heater runs on 120 V and has an easily
accessible plug, located under the driver
side door. The plug will hook up to a nor-
mal extension cable.