The 2000 Hyundai Electra has a 2.0L 4Cylinder engine that has an oil capacity of 4.2 U.S quarts (4 liters). The manual gearbox has a capacity of about 2.32 U.S. Quarts and the automatic gearbox useS8.24 quarts, if You're addressing those systems as well. For oil type, You're going to want to use the manufacturer recommended 5W40 for the engine, and 75W90 for the gearbox. It's perfectly find to go with a conventional, but a synthetic is recommended for its better operational characteristics and longevity. You can pick up a quart of SYNTEC Synthetic Motor Oil 5W-30 from O'Reilly's for around $32, which will be compatible with the engine in Your vehicle. Given its age, You may also want to consider a blend specifically for higher mileage cars.
John A.
January 2, 2020
The 2.0L inline-4 engine in the 2000 Hyundai Elantra uses 4.2 quarts of 5W30 synthetic oil or 5W40 synthetic oil (below 95 F), 10W30 synthetic oil or 10W40 synthetic oil or 10W50 synthetic oil (above -9 F), or 20W40 synthetic oil or 20W50 synthetic oil (above 32 F).
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