Suzuki Wagon R Manual page 3912

ENGINE COOLING (Z10XEP AND Z12XEP ENGINES) 6B4-5
Coolant Level Check
Coolant Level
WARNING:
To help avoid danger of being burned, do not remove
degassing tank cap while engine and radiator are still
hot.
Scalding fluid and steam can be blown out under pres-
sure if cap is taken off too soon.
To check level, lift hood and look at "see-through" degassing tank
(1). It is not necessary to remove degassing tank cap to check
coolant level.
When engine is cool, check coolant level in degassing tank (1).
A normal coolant level should be "KALT/COLD" mark on degas-
sing tank (1) when coolant is cold.
If coolant level is below "KALT/COLD" mark, remove degassing
tank cap and add recommended coolant to tank to bring coolant
level up to "KALT/COLD" mark. Then, install degassing tank cap
securely.
NOTE:
If proper quality antifreeze is used, there is no need to
add extra inhibitors or additives that claim to improve
system.
They may be harmful to proper operation of system, and
are unnecessary expense.
Cooling System Inspection and Service
WARNING:
To help avoid danger of being burned, do not remove
degassing tank cap while engine and radiator are still
hot.
Scalding fluid and steam can be blown out under pres-
sure if cap is taken off too soon.
Cooling system should be serviced as follows.
1) Check cooling system for leakage or damage.
2) Wash degassing tank cap and filler neck with clean water by
removing degassing tank cap when engine is cold.
3) Check coolant for proper level and freeze protection.