User Manual - Page 275

For 2015 EOS.

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If unleaded Premium grade gasoline is specified for your vehicle, then Volkswagen recommends using
TOP TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95 RON). For more
information on TOP TIER Detergent Gasoline, please go to the official Web site,
http://www.toptiergas.com.
The gasoline grades most commonly sold in the United States and Canada have the following octane
ratings, which can usually be found on the filler pump:
Premium grade: 91 to 96 AKI
Regular grade: 87 to 90 AKI
Unleaded gasoline
Unleaded gasoline is available throughout the USA and Canada. Volkswagen recommends that you
do not take your vehicle to places where unleaded gasoline may not be available.
Gasoline containing alcohol or MTBE
You may use unleaded gasoline blended with alcohol or MTBE (methyl tertiary butyl ether), commonly
referred to as oxygenated fuels, if the blended mixture meets the following criteria:
Blends of gasoline and methanol (wood alcohol or methyl alcohol):
Anti-Knock Index (AKI) must be 87 or higher.
Blend must contain no more than 3% methanol.
Blend must contain more than 2% co-solvents.
Blends of gasoline and ethanol (grain alcohol or ethyl alcohol):
Anti-Knock Index (AKI) must be 87 or higher.
Blend must contain no more than 15% ethanol.
Blends of gasoline and MTBE:
Anti-Knock Index (AKI) must be 87 or higher.
Blend must contain no more than 15% MTBE.
Seasonally adjusted gasoline
Many fuels are blended especially for winter or summer conditions. When seasons change,
Volkswagen suggests that you buy fuel at busy stations where the seasonal adjustment is more likely
to be made earlier.
WARNING
Starting fluids can explode and cause a run-away vehicle condition.
Never use starting assist fluids.
NOTICE
Never use fuel with an octane rating lower than 87 AKI/91 RON. Using lower octane fuel may
cause expensive engine damage.
Never use leaded gasoline! Leaded gasoline will severely damage your vehicle's catalytic
converter.
Methanol-blended fuels that do not meet the criteria listed above may cause corrosion and
may damage plastic and rubber parts in the fuel system.
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.
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