Volvo D12, Operator'S Manual

Page: 42 / 214

38 Cooling System
Coolant consists of clean water and an-
tifreeze. This mixture should never be less
than 40% antifreeze and 60% clean water
or more than 60% antifreeze and 40%
clean water. Mix the antifreeze and water
to the required concentration before adding
to the cooling system.
NOTE! Do not mix different products,
such as regular antifreeze and extended life
antifreeze.
NOTE! Volvo Trucks North America, Inc.
does not recommend the use of antifreeze
based on propylene glycol.
W2003082
Coolant, consisting of an antifreeze solu-
tion in water, should be used year-round to
provide freeze and boil-over protection as
well as providing a stable environment for
seals and hoses. The solution needs to be
tested for proper additive levels at regular
intervals (see page 45 for testing SCA lev-
els), unless extended life antifreeze is used.
Adjust additive concentration if not at the
proper levels.
NOTE! Do not use antifreeze formulated
for automobile gasoline engines. These
have a very high silicate content that will
clog the radiator and leave unwanted de-
posits in the engine.