Volkswagen Touran Owners Manual: Diesel
First read and observe the introductory information and safety warnings
Diesel fuel must comply with the European standard EN 590 (in Germany EN 590 or DIN 51628).
If you use diesel fuel with a high sulphur content, the service intervals are shorter ⇒ BookletService schedule, . A Volkswagen dealership will be able to tell you which countries have diesel with a high sulphur content.
Do not mix fuel additives (thinners, or similar additives) with diesel fuel.
When using summer-grade diesel fuel, difficulties may be experienced at sub-zero temperatures because the fuel thickens due to wax separation. For this reason winter-grade diesel fuel is, for example, available in Germany during the cold months. It can be used at temperatures lower than -20 °C (-4 °F).
In countries with different climatic conditions the diesel fuel sold generally has different temperature characteristics. Check with a Volkswagen dealer or filling stations in the country concerned regarding the type of diesel fuels available.
It is not unusual for a cold diesel engine to be louder in cold temperatures that in warm weather. In addition, exhaust emissions may be tinged with blue while the engine starts and reaches operating temperature. The amount of exhaust fumes depends on the outside temperature.
Diesel vehicles are equipped with a filter pre-heater system. This ensures that the fuel system remains operational even up to approximately -24 °C (-11 °F), provided you use winter-grade diesel which is safe up to -15 °C (+5 °F).
However, if the fuel has waxed to such an extent that the engine will not start at temperatures of under -24 °C (-11 °F), simply place the vehicle in a warm garage or workshop for a while.
Vehicles fitted with a diesel engine may also be equipped with an additional fuel heater. This heater is powered with fuel from the vehicle tank. Odours and steam could be emitted from the vehicle temporarily. This is quite normal when the system is in use, and does not indicate a damage or malfunction in the system.
The supplementary heater will be switched off automatically if the level in the fuel tank is low (reserve level).
WARNINGNever use a start booster. Start boosters could explode or cause the engine to suddenly rev which can cause serious injuries and engine damage.
- Your vehicle is not suitable for use with biodiesel and must not be filled up or driven with biodiesel. Failure to observe this point could result in damage to the fuel system and engine damage!
- Some diesel manufacturers blend biodiesel with diesel fuel in compliance with European Standard 590 or an equivalent standard (in Germany e.g. DIN 51628). This diesel is suitable for use in our vehicle and will not damage the engine and fuel system.
- The diesel engine has been developed for use with diesel fuel only. For this reason, petrol, heating oil or other unsuitable fuels may not be used. These fuels can cause serious damage to the fuel system and engine.
- The service life of the diesel particulate filter could be reduced considerably if diesel fuels with a high sulphur content are used. A Volkswagen dealership will be able to tell you which countries have diesel with a high sulphur content.
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