Mercedes-benz M-Class 2006 Owners Manual User Manual download pdf (Page 498)

497

Technical data

Fuels, coolants, lubricants, etc.

Gasoline additives

A major concern among engine manufac-

turers is carbon build-up caused by gaso-

line. Mercedes-Benz recommends only the

use of quality gasoline containing additives

that prevent the build-up of carbon depos-

its.

After an extended period of using fuels

without such additives carbon deposits

can build up, especially on the intake

valves and in the combustion area, leading

to engine performance problems such as:

앫 Warm-up hesitation

앫 Unstable idle

앫 Knocking/pinging

앫 Misfire

앫 Power loss

In areas where carbon deposits may be

encountered due to lack of availability of

gasolines which contain these additives,

Mercedes-Benz recommends the use of

additives approved by us for use on

Mercedes-Benz vehicles. Refer to Factory

Approved Service Products pamphlet for a

listing of approved product(s). Follow

directions on product label.

Do not blend other fuel additives with fuel.

This only results in unnecessary costs and

may be harmful to the engine operation.

Damage or malfunction resulting from

poor fuel quality or from blending addition-

al fuel additives other than those tested

and approved by us for use on

Mercedes-Benz vehicles listed in the

Factory Approved Service Products

pamphlet are not covered by the

Mercedes-Benz Limited Warranty.

Coolants

The engine coolant is a mixture of water

and anticorrosion/antifreeze, which

provides:

앫 Corrosion protection

앫 Freeze protection

앫 Boiling protection (by increasing the

boiling point)

The cooling system was filled at the factory

with a coolant providing freeze protection

to approximately -35°F (-37°C) and corro-

sion protection.

If the antifreeze mixture is effective to

-22°F (-30°C), the boiling point of the cool-

ant in the pressurized cooling system is

reached at approximately 266°F (130°C).

The coolant solution must be used year

round to provide the necessary corrosion

protection and increase boil-over protec-

tion. Refer to Maintenance Booklet for

replacement interval.

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