Most 2018 Hyundai models require a full-synthetic engine oil with a viscosity of 5W-20. Some engines or driving conditions may specify 5W-30. Always verify the exact requirement in your owner’s manual or on the oil filler cap for your specific model.
Oil grade guidance for 2018 Hyundai models
The following guidelines cover the most common cases across Hyundai's 2018 lineup. Always refer to your specific model's manual for the exact grade and specification.
- 5W-20 synthetic is the default recommendation for most 2018 Hyundai engines.
- 5W-30 synthetic may be required for turbocharged or higher-load applications, extreme heat, or certain engines; verify for your model.
- Oil should meet ILSAC GF-5 or API SN (or newer) standards and be compatible with Hyundai's specifications.
Because oil specifications can vary by engine and market, always confirm the exact grade for your car in the owner's manual or by inspecting the oil fill cap.
How to confirm the exact specification for your vehicle
- Consult the owner’s manual: Look for the "Oil specification" or "Maintenance" section to find the recommended viscosity and certification.
- Check the engine oil filler cap: Some caps indicate the required viscosity, such as "5W-20."
- Inspect under-hood labels or your vehicle’s service sticker: Certain models display the approved oil grade and standard there.
- When in doubt, contact a Hyundai dealer or use Hyundai's official owner resources to confirm the exact spec for your VIN.
Verifying the exact specification helps protect engine longevity and ensures warranty compliance.
Notes on practical driving and maintenance: Using the correct oil type and following recommended service intervals supports optimal performance and fuel economy. Hyundai typically endorses synthetic oil with the appropriate viscosity and standard, and you should adhere to the scheduled oil change interval for your model and condition of use.
Summary: For 2018 Hyundai vehicles, the typical oil is 5W-20 full synthetic, with 5W-30 as a possible alternative for certain engines or climates. Always check your owner's manual or the oil cap to confirm the exact grade and specification for your specific model and VIN.