Scania D11 User Manual

1997-11:2 © Scania Industrial & Marine Engines 19
6. Every 2,400 hours:
CHECKING COOLANT
Coolant should be checked as follows:
a) Check the appearance of the coolant.
b) Coolant with glycol only: Check the glycol content.
c) Coolant with only Scania Anti-corrosive:
Check the protection against corrosion.
The composition of the coolant is described in more detail under
“Starting and running”
a)
Checking the appearance of the coolant
- Take a little coolant in a vessel and check that it is clean and clear.
- If the coolant is contaminated or cloudy: Consider changing the coolant
- The water for the coolant should be free of dirt.
- Use drinking water with a pH of 6 - 9.
b)
Checking glycol content
If there is a danger of freezing, use only glycol as protection against corrosion
in the coolant.
- Cooling systems with glycol must contain at least 30% glycol by vol-
ume to offer sufficient protection against corrosion.
- 30% glycol by volume provides anti-freeze protection down to -18 °C.
If more protection is required, see the table on the next page for calculat-
ing the necessary amount of glycol.
We recommend only nitrite-free glycol anti-freeze with the following sup-
plier designations:
BASF G48 or BASF D542
- Always top up the anti-freeze if the content drops below 30% by vol-
ume. A glycol content above 60% by volume will not improve the pro-
tection against corrosion.
- The table below shows the temperature at which ice starts to form. The
engine freezes and breaks at significantly lower temperatures, see graph.
- Ice forming in the coolant often causes malfunction without any risk of
damage. The engine must not be loaded hard when ice is forming.
Note! The coolant should be changed when the cooling system is
cleaned: Every 4,800 hours or at least every 5th year.
Important! If a coolant filter is used in the cooling system, it must not
contain an inhibitor.
The coolant should be mixed
before it is poured into the
cooling system.
Never top up with only water
or only glycol.
WARNING
Ethylene glycol is
toxic if ingested.
Avoid contact with the skin.
!
The recommended glycols
must not be mixed with glycol
which has nitrite-based anti-
corrosive.
This could cause sludging and
reduced cooling capacity.
Coolant composition:
If there is a danger of freezing:
at least 30% glycol by volume
Max. 60% glycol by volume
If there is no danger of
freezing:
7-12 % by volume
Scania Anti-corrosive

Scania D11 Specifications

General

Brand	Scania
Model	D11
Category	Engine
Language	English