It should say in your owners manual.
5w20...use synthetic
Tiburon
10w30
takes Hyundai /KIA SP-III fluid.
Hyundai SP3
2005 Hyundai accent needs what kind of transmission fluid?
Well...you can either use the recommended ATF (Hyundai SPIII) or you can substitute it for Amsoil Synthetic ATF http://www.amsoil.com/catalog.aspx?code=ATFQT-EA <-- Amsoil ATF For 2001 Hyundai Tiburon for Hyundai SPIII, Go to a Hyundai Dealer.
The 2005 Hyundai Accent has a 5-speed manual.
The 2005 Hyundai Sonata has a 5-speed manual.
The 2005 Hyundai Elantra has a 5-speed manual.
A Hyundai Tiburon if were thinkin of the same car...
The 2005 Hyundai Elantra runs on regular unleaded.