The 2018 Hyundai Accent’s engine requires SAE 5W-20 motor oil, with a capacity of about 3.7 quarts (3.5 liters) including the filter. It should meet API SN or newer and ILSAC GF-5 or newer specifications. This article explains the official specs, how to choose the right grade, and practical maintenance tips.
Official oil specifications
Hyundai’s owner manual and service literature specify the grade, specification, and capacity for the Accent’s 1.6-liter engine. Knowing these details helps ensure proper lubrication and engine longevity.
- Viscosity grade: SAE 5W-20
- Oil specification: API SN or newer, ILSAC GF-5 or newer
- Oil type options: conventional, synthetic blend, or full synthetic (as permitted by the manual and driving conditions)
- Oil capacity: about 3.7 quarts (3.5 liters) with filter
In short, use 5W-20 with the appropriate API/ILSAC specification, and fill to the recommended level with the correct type of oil for your driving conditions.
Practical maintenance guidance
To keep your engine well-lubricated, follow these basic maintenance steps and consult the owner’s manual for exact intervals and requirements.
- Confirm the correct oil grade and specification (5W-20, API SN or newer, ILSAC GF-5 or newer).
- Choose an oil type based on climate and driving: conventional, synthetic blend, or full synthetic as appropriate.
- Check the oil level with the dipstick on a level surface and when the engine is cool; add oil if the level is below the minimum mark, avoiding overfilling.
- Replace the oil and oil filter at the interval recommended in the owner’s manual, using the proper filter and torque.
Following these steps helps ensure reliable lubrication and reduces the risk of engine wear or damage.
Additional notes
Always verify the exact specification for your vehicle from the owner’s manual label under the hood or the Hyundai official service information, as regional variations can occur. If you drive in extreme temperatures or under heavy use, you may need to adjust your maintenance schedule accordingly.
Summary
For the 2018 Hyundai Accent, the recommended engine oil is SAE 5W-20 meeting API SN or newer and ILSAC GF-5 or newer, with a total capacity of about 3.7 quarts (3.5 liters) including the filter. You can use conventional, synthetic blend, or full synthetic oil, depending on your climate and maintenance plan. Always follow the owner’s manual for the exact intervals and specifications to ensure optimal engine performance.
Can I use 5W-30 instead of 5W20 in my Hyundai?
Yes, you can switch; all you need to do is change the oils.
Can you put 5W-30 in a Hyundai accent?
Oil Types for Popular Hyundai Sedans
conventional oil debate aside, you'll want to know the exact oil type that your Hyundai sedan takes: Hyundai Elantra Oil Type: 5W-20 or 5W-30. Hyundai Sonata Oil Type: 5W-20 or 5W-30. Hyundai Accent Oil Type: 5W-20 or 5W-30.
What type of oil goes in a Hyundai accent?
Valvoline – High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks (Part No. 881169)
What type of oil does a 2018 Hyundai use?
2018 Hyundai SONATA:
Recommended oil type: 5W-30 full synthetic. Oil capacity: 4.8 quarts (4.5 liters) for 2.4L engine, 4.2 quarts (4.0 liters) for 2.0T engine.


