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The 2010 Hyundai Sonata comes in two models: the 2.4-liter GDI or the 274-horsepower 2.0T Turbo.
To keep the car performing in top condition and achieving maximum fuel economy, you should only use the manufacturers recommend oil types. For each oil type Hyundai recommends using only Quaker State oils, according to the owners manual.
SAE 5W-20
For all temperature ranges, Hyundai recommends 2010 Sonata owners to primarily use SAE 50W-20 fully synthetic grade motor oil. The SAE in front stands for Society of Automotive Engineers and motor oils with an SAE stamp of approval meet its exact specifications for each oil grade. SAE 5W-20 oil helps improve fuel economy and protect the engine from build-up and oil deposits. It also has these other characteristics: enhances engine power, protects from engine wear, gets to moving parts quickly and starts well in cold weather.
SAE 5W-30
If SAE 5W-20 motor oil is not available, the next recommended oil type is the semi-synthetic SAE 5W-30. This is another motor oil that improves fuel economy and keeps the engine performing smoothly. It has similar characteristics to SAE 5W-20 motor oil, but differs slightly. It provides good protection within the first 10 minutes of starting your car. You do not need to change your engine oil as frequently when using SAE 5W-30.
SAE 10W-30
The 2010 Hyundai Sonata can also take SAE 10W-30 motor oil when SAE 5W-20 or SAE 5W-30 are not available. The benefits of SAE 10W-30 engine oil include better engine protection. This oil type is almost three times better at reducing engine wear than the SAE 5W-20 type, however, it does not give nearly as much fuel economy improvement. It is important to note that you can only use SAE 10W-30 grade motor oil if your 2010 Hyundai Sonata remains in weather conditions above 0 degrees Fahrenheit.
