Mercedes-benz 2006 C-Class User Manual download pdf (Page 445)

444

Technical data

Fuels, coolants, lubricants, etc.

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 cost and

may be harmful to engine operation.

Damage or malfunction resulting from

poor fuel quality or from blending

additional 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.

Fuel requirements

Only use premium unleaded fuel:

앫 The octane number (posted at the

pump) must be 91 min. It is an average

of both the Research (R) octane num-

ber and the Motor (M) octane number:

(R+M)/2. This is also known as the

ANTI-KNOCK INDEX.

Unleaded gasoline containing oxygenates

such as ethanol, IPA, IBA and TBA can be

used provided the ratio of any one of these

oxygenates to gasoline does not

exceed 10%; MTBE must not exceed 15%.

The ratio of methanol to gasoline must not

exceed 3% plus additional cosolvents.

Using mixtures of ethanol and methanol is

not allowed. 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.

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 -22°F (-30°C) and

corrosion protection.

If the antifreeze mixture is effective

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

coolant in the pressurized cooling system

is reached at approx. 266°F (130°C).

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