Mercedes-Benz E-Class Coupe 2020 Owner's Manual page 363

360 Technical data
tected against overheating and corrosion at
high outside temperatures.
Always use coolant approved by
#
Mercedes-Benz.
Observe the instructions in the
#
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1.
Have the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the
engine cooling system:
a minimum of 50% (antifreeze protection
R
down to approximately -37°C)
a maximum of 55% (antifreeze protection
R
down to -45°C)
Notes on windscreen washer fluid
Observe the notes on operating fluids
( page 351).
/
& WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Windscreen washer concentrate is highly
flammable. It could ignite if it comes into
contact with hot engine component parts or
the exhaust system.
Make sure that no windscreen washer
#
concentrate spills out next to the filler
opening.
* NOTE Damage to the exterior lighting
due to unsuitable windscreen washer
fluid
Unsuitable windscreen washer fluids may
damage the plastic surface of the exterior
lighting.
Only use windscreen washer fluids
#
which are also suitable for use on plas‐
tic surfaces, e.g. MB SummerFit or MB
WinterFit.
* NOTE Blocked spray nozzles caused by
mixing windscreen washer fluids
Do not mix MB SummerFit and MB Win‐
#
terFit with other windscreen washer flu‐
ids.
Do not use distilled or de-ionised water. Other‐
wise, the fill level sensor may be triggered erro‐
neously.
Recommended windscreen washer fluid:
above freezing point: e.g. MB SummerFit
R
below freezing point: e.g. MB WinterFit
R
For the correct mixing ratio, refer to the informa‐
tion on the antifreeze container.
Mix washer fluid with windscreen washer fluid all
year round.