1997-11:2 © Scania Industrial & Marine Engines 21
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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 2,400 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 4,800 hours or at least every 5th year.
Changing 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 valves.
4. Fill coolant through the expansion tank filler hole.
Mix coolant as described on page 19.
Scania Anti-corrosive must not
be mixed with glycol.
Mixing or over concentration
can cause sludging and
reduced cooling capacity.
Any coolant filter must not
contain inhibitor.
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