More than likely 5w20. Check your owner's manual, the oil fill cap, or call your local Hyundai dealer.
The 1999 Sonata oil filter can be found on the right hand side of the engine. The oil filter will be near the bottom of the engine next to the oil pan.
It is important to know the engine oil capacity of a vehicle. The 1999 Hyundai Sonata holds about 3 liters of engine oil.
What are the wirering codes for the back of the 1999 hyundia sonata.
The Frank Sonata was created in 1999.
The 2006 Hyundai Sonata with the 3.5L V6 has an engine oil service fill of 4.5-quarts with the filter. The recommended viscosity and grade for this application is SAE 5W20, of API 'SL' or better.
5w30 or 10w30
10w30
four
According to the 1999 Lincoln Navigator Owner Guide ( 5W-30 )
Where is the oil pan on a 2005 Hyundai Sonata?
If a 1999 Sonata horn stays on, check the fuse and replace it. You should also check to ensure there is not a wiring problem.
5 w 30 , according to the 1999 Ford Explorer owners manual