Engine Oils; Brake Fluid - Mercedes-Benz 190 E2.3 1985 Owner's Manual

Engine Oils

Engine oils are specifically tested
for their suitability in our engines.
Therefore, use only engine oils recom­
mended by us. Information on recom­
mended brands is available at any
authorized MERCEDES-BENZ dealer.
On a new vehicle, the engine is filled
with break-in oil in the factory. This oil
is specially developed for the specific
operating conditions during the first
1300-1600 k m /8 0 0 -1000 miles.
If engine oil has to be added before the
first inspection 1300-1600 km/800 -
1000 miles, you may use one of the
recommended oils listed on the flyer
included with your vehicle literature:
" Factory Approved Engine Oils, Cool-
ant-Antifreeze and Brake Fluid" .
Fuel Requirements
Use only unleaded gasoline meeting
ASTM standard D 439:
The octane number (posted at the
pump) must be 87 min. It is an average
of both, the Research (R) octane
number and the Motor (M) octane
number: (R+M)/2. This is also known
as ANTI-KNOCK INDEX.
Unleaded gasoline containing oxyge­
nates such as Ethanol, MTBE, IPA,
IBA and TBA can be used provided the
ratio of either one of these oxygenates
to gasoline does not exceed 10%.
The ratio of Methanol to gasoline must
not exceed 3%. In both cases, this
does not include the cosolvents.
Using mixtures of Ethanol and
Methanol is not allowed. MTBE may,
however, be added up to 15%.
Gasohol, which contains 10% Ethanol
and 90% unleaded gasoline, can be
used.
These blends must also meet all other
fuel requirements such as resistance to
spark knock, boiling range, vapor
pressure, etc.

Brake Fluid

During the course of the operation
of the vehicle, the boiling point of the
brake fluid is continuously reduced
through the absorption of moisture
from the atmosphere. Under extremely
hard operating conditions, this mois­
ture content can lead to the formation
of vapor in the system thus reducing
the system's efficiency. The brake fluid
must therefore be replaced annually,
preferably in the spring. It is recom­
mended to use only brake fluid
approved by MERCEDES-BENZ.
Your MERCEDES-BENZ dealer will
provide you with additional information.