Sterling 360, Driver'S And Maintenance Manual

Page: 143 / 213

11-35
Use the following table to determine the correct mix-
ing ratio for the coolant, depending on temperature.
Coolant mixing ratio (as percentage of volume)
NOTE:
Vehicles are shipped with a 50% concentration of
coolant and can therefore be used at temperatures
down to – 22 × F ( – 30 × C).
CAUTION
Use coolant mixing ratios between 30% and
60%. The proper mixing ratio under normal tem-
peratures is 30%. Below 30%, this solution per-
forms poorly as a corrosion inhibitor; above
60%, it performs poorly as an antifreeze.
4 Coolant level checking
NOTE:
•
Always check the coolant level before starting
the engine. When the coolant gets hot, it
expands, making the level appear higher than it
actually is.
•
Deposition may occur in the surge tank. This will
not cause any problem.
•
Check that the coolant level is between the
“FULL” and “LOW” marks on the surge tank.
•
If the coolant level is below the “LOW” mark,
add coolant until the level reaches the “FULL”
mark.
•
Check for coolant leakage from the radiator and
radiator hoses.
If you find water on the ground underneath your
vehicle, there could be a coolant leak.
•
If the coolant level is abnormally low and quickly
drops again when coolant has been added,
there may be a coolant leak. Bring the vehicle to
an authorized Sterling service facility.
Low-
est
tem-
pera-
ture
°
F
(
°
C)
14
(–10)
or
higher
5
(–15)
–4
(–20)
–13
(–25)
–22
(–30)
–31
(–35)
–40
(–40)
Mix-
ing
ratio
(%)
30 35 40 45 50 55 60
Coolant quantity 17 quarts (16 L)
Z12075a