Coolants - Mercedes-Benz 300 SE 1993 Owner's Manual

Coolants

The engine coolant is a m ixture of
w ater and a n tic o rro s io n /a n ti­
freeze, w hich provides:
• corrosion protection
• freeze protection
• boiling protection (by increasing
the boiling point).
The cooling system was filled at
the factory with a coolant provi­
ding freeze protection to approx.
- 2 2 ° F (-3 0 °C ) and corrosion
protection.
The coolant solution m ust be used
year round to provide the neces­
sary corrosion protection and in ­
crease in the boil-over protection.
You should have it replaced every
3 years.
To provide the im portant corrosion
protection, the solution m ust be at
least 45% a ntico rro sio n /a n tifre e ze
(equals a freeze protection to
approx. -2 2 ° F [-3 0 °C ]). If you use
a solution that is more than 55%
a ntico rro sio n /a n tifre e ze (freeze
protection to approx. - 4 9 °F
[-4 5 ° C ]), the engine tem perature
will increase due to the lower
140
heat transfer capa bility of the
solution. Therefore, do not use
m ore than this am ount of a n ti­
co rrosio n/a ntifre eze .
If the coolant level is low, w ater
and MB a ntico rrosio n/a n tifre e ze
should be used to bring it up to
the proper level (have cooling
system checked for signs of
leakage).
The w ater in the cooling system
m ust m eet m inim um requirem ents,
w hich are usually satisfied by
norm al d rinking water. If you are
not sure about the w ater quality,
co nsu lt your authorized M ercedes-
Benz dealer.
A n tico rro sio n /a n tifre e ze
Y our vehicle contains a num ber of
alum inum parts. The use of a lu ­
m inum com ponents in motor
vehicle engines necessitates that
a n tico rro sio n /a n tifre e ze coolant
used in such engines be sp ecifi­
cally form ulated to protect the
alum inum parts. (Failure to use
such a ntico rro sio n /a n tifre e ze
coolant w ill result in a significantly
shortened service life.)
T herefore the follow ing product is
strongly recom m ended for use in
your car: M ercedes-Benz
A n tico rro sio n /A n tifre e ze Agent.
Before the start of the w inter
season (or once a year in the hot
southern regions), you should
have the a n tico rro sio n /a n tifre e ze
concentration checked. The
coolant is also regularly checked
each tim e you bring your vehicle
to your authorized M ercedes-Benz
dealer for m aintenance service.
A n tic o rro sio n /a n tifre e ze quantity
M odel Approx. freeze
protection
- 3 5 ° F - 4 9 ° F
(-3 7 ° C) (-4 5 °C)
300 SE 7.7 US qt 8.5 US qt
(7.25 I) (8.00 I)
400 SEL 8.2 US qt 9.0 US qt
500 SE L (7.75 I) (8.50 I)