In order to reset the oil change light on a 2006 Hyundai Tuscan you need to take the car to the dealership or your local oil changing station.
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The 2007 Hyundai Tucson with the 2.0 L 4-cyl engine has an oil capacity of 4.0 quarts.
Shell
Hyundai Motor Company recommends 10 W 40 engine oil in the Tucson model vehicle. 10W-30 motor oil can be used in the vehicle for use in cold climates.
Look under the car, it's easily accessible from the front on the passenger side near the bumper area.
Was browsing Hyundai Tucson forums and found this one over at tucsondrivers.com http://www.tucsondrivers.com/viewtopic.php?f=14&t=19 That is a link to a post which has oil changing instructions.
10w30
The oil filter is located on the back side of the engine, near the bottom. The oil filter can be best viewed from beneath the engine.
Sae 30
10w-30
The average cost for an oil change for a Hyundai E Elantra is between $25 and $55. The costs will vary depending on the grade of oil used.