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© Scania Industrial & Marine Engines
b)
Checking Protection against corrosion
There must always be sufficient anti-corrosive (inhibitor) in the coolant to
protect the cooling system against corrosion.
If there is no danger of freezing use only Scania Anti-corrosive.
The inhibitor in Scania Anti-corrosive is nitrite-free.
The correct level of anti-corrosive is 7-12% by volume.
- Fill with Scania Anti-corrosive as indicated on the packaging.
- Topping up with 1.0% by volume of Scania Anti-corrosive should be
done after every 400 operating hours.
- Never top up with water only or anti-corrosive only. Lost fluid should
always be replaced with pre-mixed coolant:
water + 10% Scania Anti-corrosive by volume.
Note:
The coolant should be changed when the cooling system is cleaned:
every 1,200 hours or at least every 3rd year.
Changing the coolant
1.
Remove the filler cap from the expansion tank.
2.
The coolant is drained at two points:
- the ”lowest point” of the engine block, see drawing
- the ”lowest point” of the cooling system.
3.
Close the drain cocks.
4.
Fill coolant through the expansion tank filler hole.
Mix coolant as described on page 32.
If a coolant filter has been fitted
it must not contain inhibitor.
Mixing corrosion inhibitor with
glycol or adding too much
corrosion inhibitor may cause
deposits and reduced cooling
capacity.
Corrosion inhibitor, if
swallowed can be fatal.
Avoid contact with the skin.
Always collect fluid in a suitable
container to avoid spillage when
changing coolant.
Dispose of used coolant through
an authorized waste disposal
contractor.
