than the engine requires. However, this does not provide any advantage in terms of fuel
consumption or engine output.
Volkswagen recommends using fuel with a low sulphur content or sulphur-free fuel for petrol
engines in order to achieve reduced fuel consumption.
Petrol additives
The quality of petrol influences the running properties, performance and service life of the engine.
This is why the vehicle should be refuelled with good quality petrol that has only non-metallic
additives pre-added by the petroleum industry. These petrol additives help to prevent corrosion,
keep the fuel system clean, and prevent the build-up of deposits in the engine.
If good quality petrol containing non-metallic additives is not available, or if engine problems arise,
the necessary petrol additives must be added to the petrol when refuelling ⇒.
Not all petrol additives are effective. The use of unsuitable petrol additives can cause considerable
damage to the engine and catalytic converter. Metallic additives should be avoided at all times.
Petrol additives on sale that are intended to improve knock resistance or increase the octane
number can also contain metallic additives ⇒.
Volkswagen recommends genuine Volkswagen or Audi fuel additives for petrol engines. These
additives and information on how to use them are available from your Volkswagen dealership.
Natural gas engines
Run the petrol tank empty every 6 months until the indicator lamp lights up. This is necessary to
maintain the required system function for petrol mode and fuel quality.
Natural gas
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Natural gas
Natural gas can be delivered in compressed or liquefied form.
Liquefied Natural Gas (LNG) is produced by rapid cooling of the natural gas. This decreases the
volume considerably in comparison to Compressed Natural Gas (CNG). A vehicle equipped with a
natural gas engine may not be refilled directly with liquefied natural gas as the gas would expand
too much once in the tank in the vehicle.
Vehicles fitted with a natural gas engine may therefore only be refilled and driven using
compressed natural gas ⇒.
Natural gas quality and consumption
Natural gas is available in two grades: H-gas and L-gas.
H-gas has a higher calorific value and a lower nitrogen and carbon dioxide content. The higher the
calorific value of the natural gas the lower the levels of consumption.
The calorific value and the nitrogen or carbon dioxide values may, however, vary within one quality
group. For this reason, the vehicle consumption may vary when using natural gas of the same
quality.
•Before filling up with petrol, check whether the fuel corresponds to the vehicle's
requirements according to the fuel standard information at the pump.
•Only use fuel that complies with EN 228 or DIN 51626-1 and has the correct octane
number. Otherwise, the engine and the fuel system can suffer considerable damage. The
engine can also lose power or fail.
•The use of unsuitable petrol additives can cause considerable damage to the engine and
catalytic converter.
•If, in an emergency, you have to use petrol with an octane number lower than the
recommended number, drive at medium engine speeds and avoid high engine loading.
Avoid high engine speeds and heavy engine loads. Failure to do so can result in engine
damage. Fill the tank with petrol with the correct octane number as soon as possible.
•Fuels that are identified at the fuel pump as containing metallic additives may not be used.
LRP fuel (lead replacement petrol) also contains high concentrations of metallic additives.
Risk of engine damage!
•Just one tankful of leaded fuel, or fuel containing other metallic additives, can seriously
impair the efficiency of the catalytic converter and can also cause considerable damage to
the catalytic converter and engine.
NOTICE
If possible, only use Volkswagen-approved engine oil ⇒. The engine oils listed are multigrade
high-lubricity oils.
Engine oils are constantly being developed and improved. A Volkswagen dealership is always kept
up to date on innovations. Volkswagen therefore recommends having engine oil changes done by a
Volkswagen dealership.
The quality of the engine oil is not only tailored to the requirements of engines and exhaust gas
treatment systems, but also to fuel quality. Due to the way in which a combustion engine works,
engine oil always comes into contact with combustion residues and fuel, which has a knock-on
effect on the ageing process of the oil.
The quality of fuels can vary greatly between individual markets and this must be taken into account
when selecting the correct engine oil.
The use of engine oils compliant with the VW 504 00 requires a fuel quality compliant with EN 228
(petrol) or fuel of and equivalent quality. Engine oils compliant with VW 504 00 are therefore
unsuitable for use in a large number of markets.
Permitted engine oil
specifications ⇒
Alternative engine oil
specifications⇒
Engine
type
Fixed service QI1, QI2, QI3,
QI4, QI7 (based on
time/distance travelled)
Only in the EU, Switzerland,
Norway, Japan and Australia
Petrol
enginesVW 502 00VW 504 00
Natural gas
engineVW 502 00-----
Alternative engine oil specifications may only be used in fixed services QI1, QI2, QI3, QI4 and
QI7, and only when fuel of a quality compliant with EN 228 (petrol), or fuel of an equivalent quality,
is available in the particular country.
Checking the engine oil level and refilling engine oil
Fig. 121 Oil dipstick with markings
Fig. 122 In the engine compartment: engine oil filler cap
First read and observe the introductoryinformation and safety warnings⇒
Introduction
a)
•Do not add any additional lubricants to the engine oil. Any damage caused by the use of
such additives is not covered by the warranty.
•Only engine oil specifications that have been approved for use with the engine should be
used. Using other engine oils can cause engine damage.
•Another engine oil can be used in the event of an emergency if the listed engine oils () are
not available. To avoid damaging the engine, a maximum quantity of 0.5 litres of the
following engine oil may be used only once until the next oil change:
- Petrol engines: standards ACEAA3/B4 or API SN (API SM).
NOTICE
a)
