Replenishing Coolant - Mercedes-Benz 240 D 1980 Owner's Manual

R eplenishing C oolant
The coolant level m ust reach:
• to marking if the coolant
1
is cold,
• to marking 2 if the coolant
is hot.
Do not remove radiator cap if
engine tem perature is above
90° C/1940 F. A llo w engine to cool
down before rem oving cap. The
radiator contains hot w ater and is
under pressure.
First turn cap to first notch to re­
lieve excess pressure using a rag. If
opened im m ediately, hot scalding
fluid and steam w ill be blown out
under pressure.
A dd cold w ater only if engine is
running. Both hot and cold engines
can be readily filled up w ith hot
w ater (see also "fuels, coolants,
lubricants, e tc .", page 87).
C hecking Fuels C oolants
If a small am ount o f coolant has to
be added (due to evaporation of
w ater), plain w ater can be added.
If a larger q ua n tity o f coolant has to
be added, a 50/50 m ixture o f w ater
and antifreeze should be used.
The drain plugs are on the RH side
o f the engine and LH bottom
m ount o f the radiator.
Lubricants etc.