Fuel -> Gasoline additives for Your Volkswagen Jetta 4 Door Sixth Generation (2011-2018)

Never use fuels that contain lead or other metals (check listing on the fuel pump). Even lead  
replacement gasoline (LRP fuels) contain metallic additives in high concentrations. They can  
damage the engine.  
Do not use fuels that fail to meet the criteria above, or with contents that cannot be  
identified.  
If you cannot tell whether a particular fuel blend meets the criteria above, ask your service  
station or its fuel supplier. 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.  
Using fuels that are different from those specified above can damage your vehicle's engine  
and fuel system and cause performance problems.  
Damage to the engine and fuel system and performance problems caused by using fuels  
that are different from those specified above or by using “starting assist fluids” are not the  
responsibility of Volkswagen and are not covered under the Emission warranties or any other  
Volkswagen Limited Warranty.  
Even a single tank full of leaded fuel can do major damage to the catalytic converter and degrade  
its effectiveness in reducing polluting emissions.  
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 offered  
for gasoline engines.  
Gasoline additives  
Please first read and note the introductory information and heed the WARNINGS  
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  
If quality gasoline with additives that do not contain metal is not available or engine malfunctions  
occur, you should add the required additives while refueling ⇒ꢀ  
.
Not all gasoline additives are effective. Using the wrong additives can cause significant and expensive  
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  
authorized Volkswagen Service Facility. Do not add any other gasoline additives.  
NOTICE  
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