Hyundai Sonata: Fuel Additives - Fuel requirements - Introduction - Hyundai Sonata YF 2011-2019 Owner's ManualHyundai Sonata: Fuel Additives

HYUNDAI recommends that you use good quality gasolines treated with detergent additives such as TOP TIER Detergent Gasoline, which help prevent deposit formation in the engine. These gasolines will help the engine run cleaner and enhance performance of the Emission Control System. For more information on TOP TIER Detergent Gasoline, please go to the website (www.toptiergas.com)

For customers who do not use TOP TIER Detergent Gasoline regularly, and have problems starting or the engine does not run smoothly, additives that you can buy separately may be added to the gasoline. If TOP TIER Detergent Gasoline is not available, add one bottle of additive to the fuel tank at every 7,500mile or every engine oil change is recommended. Additives are available from your authorized HYUNDAI dealer along with information on how to use them. Do not mix other additives.

    Do not use methanol
    Fuels containing methanol (wood alcohol) should not be used in your vehicle. This type of fuel can reduce vehicle performance and damage components of the fuel system. CAUTION Your New Vehicle L ...

    Operation in foreign countries
    If you are going to drive your vehicle in another country, be sure to: Observe all regulations regarding registration and insurance. Determine that acceptable fuel is available. ...

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