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Maintenance Section
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Engines That Are Equipped with a
Coolant Recovery Tank
g00103638
Illustration 20
(1) Filler cap. (2) “COLD FULL” mark. (3) “LOW ADD” mark.
1. Observe the coolant level in the coolant recovery
tank. Maintain the coolant level to “COLD FULL”
mark (2) on the coolant recovery tank.
2. Loosen filler cap (1) slowly in order to relieve any
pressure. Remove the filler cap.
3. Pour the proper coolant mixture into the tank.
Refer to the coolant specifications in the
maintenance information for your product. Do
not fill the coolant recovery tank above “COLD
FULL” mark (2).
4. Clean filler cap (1) and the receptacle. Reinstall
the filler cap and inspect the cooling system for
leaks.
Note: The coolant will expand as the coolant heats
up during normal engine operation. The additional
volume will be forced into the coolant recovery
tank during engine operation. When the engine is
stopped and cool, the coolant will return to the
engine.
Engines That Are Not Equipped
with a Coolant Recovery Tank
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the pres-
sure.
1. Remove the cooling system filler cap slowly in
order to relieve pressure.
2. Maintain the coolant level within 13 mm (.5 inch)
of the bottom of the filler pipe. If the engine is
equipped with a sight glass, maintain the coolant
level to the proper level in the sight glass.
g00103639
Illustration 21
Typical filler cap gaskets
3. Clean the cooling system filler cap and inspect
the condition of the filler cap gaskets. Replace
the cooling system filler cap if the filler cap
gaskets are damaged. Reinstall the cooling
system filler cap.
4. Inspect the cooling system for leaks.
i00992487
Cooling System Supplemental
Coolant Additive (SCA) -
Test/Add
SMCS Code: 1352-045; 1395-081
Cooling system coolant additive contains alkali.
To help prevent personal injury, avoid contact with
the skin and the eyes. Do not drink cooling system
coolant additive.
Note: Test the concentration of the Supplemental
Coolant Additive (SCA) or test the SCA concentration
as part of an S·O·S Coolant Analysis.
Test for SCA Concentration
Coolant/Antifreeze and SCA
NOTICE
Do not exceed the recommended six percent supple-
mental coolant additive concentration.
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