Subaru WRX & WRX STI Manuals 2015 WRX & WRX STI Owner's Manual | Page 429

11-16

Maintenance and service/Cooling system

used if synthetic oil is unavailable.

Cooling system
WARNING
. Never attempt to remove the
radiator cap until the engine has
been shut off and has cooled
down completely. Since the coolant is under pressure, you may
suffer serious burns from a spray
of boiling hot coolant when the
cap is removed.
. Be careful of the rotating cooling
fan when the engine hood is
open. When the engine temperature is high, the cooling fan in the
engine compartment may operate when the ignition switch is
turned to the “ON” position, even
if the engine is stopped. Touching the cooling fan while it is
rotating may result in injury.

CAUTION
. Vehicles are filled at the factory
with SUBARU Super Coolant that
does not require the first change
for 11 years/137,500 miles (11
years/220,000 km). This coolant
should not be mixed with any

other brand or type of coolant
during this period. Mixing with a
different coolant will reduce the
life of the coolant. Should it be
necessary to top up the coolant
for any reason, use only
SUBARU Super Coolant.
If the SUBARU Super Coolant is
diluted with another brand or
type, the maintenance interval is
shortened to that of the mixing
coolant.
. Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.

& Cooling fan, hose and connections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
If the radiator cooling fan does not operate
even when the engine coolant temperature gauge exceeds the normal operating
range, the cooling fan circuit may be
defective. Refer to “Temperature gauge”
F3-11.