Mercedes-Benz 190 E 2.3, Owner'S Manual

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Oil Pressure Gauge
The oil pressure may drop at idle
speed to 0.3 bar/4.4 psi if the engine is
at operating tem perature. This will not
jeopardize its operational reliability.
Pressure must, however, rise im m e­
diately upon acceleration.
The oil pressure gauge will not provide
early warning of low oil level. There­
fore, check oil level at regular intervals
with the dipstick.
Coolant Tem perature Gauge
Due to the pressurized cooling system,
the coolant only starts boiling at a tem ­
perature of approx. 125°C/257° F with
an anti-corrosion/antifreeze-blended
coolant fill protecting down to - 3 0 ° C/
-2 2 ° F (see also “ Fuels, Coolants,
Lubricants, etc.” ).
During severe operating conditions
and stop-and-go city traffic the coolant
temperature must not rise above the
red marking.
Emission Control
Certain systems of the engine serve to
keep the toxic components of the ex­
haust gases within permissible limits
required by law. (Nevertheless, we ur­
gently advise you not to let the engine
run in a closed garage). These sys­
tems, of course, will function properly
only when maintained strictly accord­
ing to factory specifications. Any ad­
justm ents on the engine should, there­
fore, be carried out only by qualified
MERCEDES-BENZ technicians. The
adjustments of the engine should not
be altered in any way. Moreover, the
specified service and maintenance
jobs must be carried out regularly
according to MERCEDES-BENZ ser­
vicing requirements. For details refer
to the Maintenance Booklet.
Traveling Abroad
Abroad, there is a widely-spread
MERCEDES-BENZ service network at
your disposal. If you travel into areas
which are not listed in the index of your
service station booklet, you should
request pertinent information from your
dealer.
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