© Scania CV 2009 39
c)
Checking the corrosion inhibitor
There must always be sufficient corrosion protection (inhibitor) in the coolant
to protect the cooling system against corrosion.
If there is no danger of freezing, only Scania Corrosion Inhibitor should be
used in the coolant.
The inhibitor in Scania Corrosion Inhibitor is free of nitrites.
The correct corrosion inhibitor content is 8-12% by volume.
- Topping up with 1.0% Scania Corrosion Inhibitor by volume should be
done after every 2,400 hours of operation.
- Never top up with water alone or corrosion inhibitor alone!
Fluid losses must always be replaced with pre-mixed coolant: water
+ 10% Scania Corrosion Inhibitor by volume.
Note: The coolant should be changed when the cooling system is
cleaned: every 4,800 hours or at least every 5 years.
Changing coolant
1. Remove the filler cap from the expansion tank.
2. The coolant is drained at two points:
- the lowest point of the cylinder block, see illustration.
- the lowest point of the cooling system.
3. Close the cocks.
4. Top up with coolant through the expansion tank’s filler hole.
Mix coolant as described on page 35.
Use a container to avoid spills
when changing the coolant.
Dispose of used coolant through
an authorised waste disposal
contractor.
If a coolant filter has been fitted
it must not contain inhibitor.
Mixing with glycol or the use of
too much corrosion protection
can lead to build up of sludge
and reduced cooling capacity.
Corrosion inhibitor is highly
dangerous if ingested and can
prove fatal.
Avoid contact with the skin.
Important
!
Important
!
WARNING
!
Help protect our
environment!
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