Scania DI16 - Changing the Coolant; Coolant Draining and Refilling

© Scania CV 2011 35
c)
Checking the corrosion inhibitor
There must always be sufficient corrosion 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 proportion of corrosion inhibitor 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 the coolant
1. Remove the filler cap from the expansion tank.
2. The coolant is drained at 3 points:
- 2 drain taps on the lower right-hand side of the block, see illustration
- Drain tap on the lower left-hand side of the block, see illustration.
And at the lowest point of the cooling system, remove 2 plugs under
the heat exchanger.
3. Close the drain taps.
4. Top up with coolant through the expansion tank's filler hole.
Mix coolant as described on page 33.
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 inhibitor
can lead to a build-up of sludge
and reduced cooling capacity.
Corrosion inhibitor can be fatal
if ingested.
Avoid contact with the skin.
Important
!
Important
!
WARNING
!
Help protect our
environment!