Kia Optima: Fuel Additives - Fuel requirements - Introduction - Kia Optima TF 2011-2021 Owners ManualKia Optima: Fuel Additives

Kia 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, one bottle of additive added to the fuel tank at every 12,000 km or every engine oil change is recommended. Additives are available from your authorized Kia 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. ...

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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Specifications
Specifications IMS Electrical System ItemSpecificationRating voltageDC 12VOperating voltageDC 9V ~ 16VOperating temperature-22°F ~ 176°F (-30°C ~ +80°C)Maintaining temperature-40°F ~ 185°F ...

Towing
If the vehicle needs to be towed, call a professional towing service. Never tow vehicle with just a rope or chain. It is very dangerous. ...

Recommended SAE viscosity number
CAUTION Always be sure to clean the area around any filler plug, drain plug, or dipstick before checking or draining any lubricant. This is especially important in dusty or sandy areas and ...

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