Checking Coolant Level; Replenishing Coolant - Mercedes-Benz 300 SD Turbo Diesel 1982 Owner's Manual

Checking Coolant Level

The coolant level can be checked
visually at the transparent coolant
reservoir.
To check the coolant level, the vehicle
must be parked on level ground.
The coolant level m ust reach:
The marking (1, arrow) on the reser­
voir when the engine is cold.
Approx. 2 cm/0.8 in higher when the
engine is at operating tem perature.

Replenishing Coolant

If a small amount of coolant has to be
added (due to evaporation of water),
plain water can be added.
If a larger quantity of coolant has to
be added, a 50/50 m ixture o f water
and antifreeze should be used.
Caution:
Do not remove pressure cap on
coolant reservoir if engine tem pera­
ture is above 90° C /194° F. Allow
engine to cool down before rem oving
cap. The coolant reservoir contains
hot water and is under pressure.
First turn cap to firs t notch to relieve
excess pressure using a rag. If
opened immediately, hot scalding
fluid and steam will be blown out
under pressure.
The drain plugs fo r the cooling
system are located on the right-hand
side of the engine b lock and the
bottom of the radiator.
Checking Fuels Coolants Lubricants etc.
69