The 2017 Hyundai Elantra oil type and capacity iS5w-30 and 4.4 quarts. Having high quality oil is essential for the engine to run smoothly. You will run into issues with this fluid at some point. Bad oil can cause the engine to fail. A normal problem is a nasty burning smell. This needs to be looked into as soon as possible or the car might explode. Knocking noise may arise from the engine. You could experience poor gas mileage as well. Your oil needs to be changed eventually. Every 5,000 to 10,000 miles is a good rule of thumb. If You don't change it, there will be problems with the engine.
Pat T.
January 2, 2020
The 2017 Hyundai Elantra uses a full synthetic oil - the 1.4L four cylinder engine and the 1.6L four cylinder both prefer 5W-30 . The 2.0L four cylinder engine prefers 5W-20. The oil capacity for 1.4L is 4.4 quarts, for the 1.6L is 4.8 and for 2.0L is 4.2 quarts, all with a dry filter.
Linda Truman
June 2, 2020
I spoke with agent was told 4 qts SR3# what's that
5w 20 5w 30 5w-20 preferred cap is 4.2 with filter
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