In most Hyundai models, you should use the viscosity specified by the owner’s manual; 5W-20 is commonly recommended and 5W-30 is not typically approved unless explicitly stated. So if your manual does not authorize 5W-30, do not switch.
Hyundai engines are engineered with precise tolerances and fuel economy targets. The viscosity you choose affects oil film strength, wear, and emissions; swapping without confirmation can affect performance, lubrication, and warranty. Always check your exact vehicle's documentation or contact Hyundai customer support for engine-specific guidance.
What Hyundai guidance typically says about oil viscosity
To understand where 5W-20 and 5W-30 fit for your vehicle, check the official viscosity specification for your exact engine and model year. The following notes summarize common patterns and what to look for in your documentation.
Engine-specific notes
Engine family, climate, and driving conditions can determine whether 5W-30 is an acceptable alternative to 5W-20 in some Hyundai engines. Always rely on the exact wording in your owner's manual or Hyundai service information.
- Most Hyundai gasoline engines list 5W-20 as the recommended viscosity for normal operation.
- 5W-30 may be listed as an acceptable alternative only under certain conditions—or as a manufacturer-approved option—in the manual, service bulletins, or warranty documentation.
- Viscosity recommendations can differ by engine family, climate, and driving conditions, so the exact grade depends on your model and country.
- Always use API-certified oil that meets the specification shown in the owner's manual (for example, ILSAC GF-5, GF-6, etc.).
Conclusion: If your manual does not explicitly allow 5W-30 for your engine, stick with 5W-20. If it does allow 5W-30, you may switch only under the manual's stated conditions.
When 5W-30 might be acceptable, and what to check
If your Hyundai manual mentions that 5W-30 is an acceptable alternative, or if a dealership has approved it for your engine, you can consider switching. The following factors commonly appear in official guidance and should be verified before changing.
Key determining factors
These are typical conditions where 5W-30 could be allowed: engine family listing, severe climate or driving, and service interval requirements as stated by Hyundai.
- Your engine family explicitly lists 5W-30 as an alternate viscosity in the owner's manual or technical bulletins.
- You operate in very high-temperature climates or engage in severe service (e.g., towing, extended high-RPM driving) if the manual allows it.
- You are following a specific long-life oil specification that requires 5W-30 as part of the approved spec.
Conclusion: Only proceed if the manual or official guidance confirms that 5W-30 is acceptable for your engine and circumstances.
How to switch oil viscosity safely: practical steps
If you decide to switch, follow these steps to avoid issues with oil pressure, engine wear, or warranty concerns. The steps assume you are using the correct API/spec oil and that the switch is approved by Hyundai.
- Double-check the exact viscosity and specification listed for your engine in the owner's manual or Hyundai's official portal.
- Use the approved oil grade (5W-20 or 5W-30) that meets the specification and API/ILSAC requirements for your engine.
- Do not mix oils of different viscosities or brands; if you are transitioning, perform an oil change with the new viscosity rather than topping up mid-cycle.
- Change the oil filter and reset any oil-life monitoring as per service instructions.
- Monitor oil level, engine temperature, and performance after the switch; if you notice unusual noises, increased consumption, or warning lights, consult a dealer.
Conclusion: Changing viscosity should be done only after verifying that it is allowed and following proper service procedures. If in doubt, revert to the recommended 5W-20 and consult Hyundai support.
Summary
In short, do not swap 5W-20 for 5W-30 unless your Hyundai owner's manual or an official Hyundai guidance explicitly allows it for your exact engine and climate. Always follow the factory-recommended viscosity, use a compliant oil, and consult a dealer if you are unsure. This protects engine performance and maintains warranty coverage.
Can I use 5W30 instead of 5W20 in my Hyundai Elantra?
As for the Hyundai Elantra recommended oil type, you can choose either of these grades in conventional or synthetic oil: 5W-20. 5W-30.
What will happen if I use 5W-30 instead of 5W20?
Can You Switch Between 5W30 and 5W20? Only switch if your owner's manual approves. Using the wrong oil can affect engine performance and longevity. Moving from 5W20 to 5W30 adds protection but might reduce efficiency.
Can I use 5W-30 in Hyundai?
Current models (2022-2024) require 0W-20 synthetic oil meeting API SN PLUS specifications, with gasoline engines taking 6.1 quarts and hybrid/PHEV engines requiring 5.1 quarts. Earlier models (2016-2021) may use 5W-20 or 5W-30 depending on engine type.
Which oil is better for a Hyundai Elantra?
The recommended Hyundai Elantra oil type for most model years is 5W-20 or 5W-30 motor oil.