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If you notice a loss of fuel economy or drivability and performance problems using one of these
fuel blends, we recommend that you switch to unblended fuel. Never use fuel line antifreeze of‐
fered for gasoline engines.
Gasoline additives
Read and follow the introductory information and safety information first⇒ Introduction to the
subject
Additives are used to improve the quality of the gasoline.
Fuel quality impacts the operating performance, efficiency and service life of the engine. Therefore,
use high quality gasoline that is already blended by the fuel supplier with suitable gasoline additives
that do not contain metal. The additives provide corrosion protection, clean the fuel system, and help
prevent deposits on the engine.
Volkswagen recommends TOP TIER Detergent Gasoline. For more information on TOP TIER
Detergent Gasoline, please go to the official Web site http://www.toptiergas.com.
If quality gasoline with additives that do not contain metal is not available or engine malfunctions oc‐
cur, you should add the required additives while refueling ⇒ .
Not all gasoline additives are effective. Using the wrong additives can cause significant and expen‐
sive damage to the engine and the catalytic converter. Never use additives that contain metal. Please
note that metal can be included in some aftermarket gasoline additives that are available to be added
to gasoline during or after refueling to help improve knock resistance or increase the octane rating.
Volkswagen recommends using only additives approved by Volkswagen. Appropriate additives as
well as instructions on how to use them are available from your authorized Volkswagen dealer or au‐
thorized Volkswagen Service Facility. Do not add any other gasoline additives.
NOTE
You can damage the engine by using incorrect additives.
Using incorrect gasoline additives can cause extensive engine damage as well as damage to
the catalytic converter.
If you must fuel your vehicle with gasoline whose octane rating is too low, only drive with the
engine speed in the middle of the rpm range and with low engine load. Avoid high rpm and
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