on bottom of oil pan
The 2004 Hyundai Elantra is 14 ft. 9.1 in. (177.1 in.) long.
The 2004 Hyundai Accent is 13 ft. 10.7 in. (166.7 in.) long.
The 2004 Hyundai Sonata is 15 ft. 6.9 in. (186.9 in.) long.
ours was hanging by the hose behind the intake manifold. not sure where it is supposed to be mounted.
The 2004 Hyundai Elantra has a 5 yr./ 100000 mi. warranty against rust.
The 2004 Hyundai Sonata has a 5 yr./ 100000 mi. warranty against rust.
The 2004 Hyundai Accent has a 5 yr./ 100000 mi. warranty against rust.
The 2004 Hyundai Santa-FE has a 5 yr./ 100000 mi. warranty against rust.
Many fluids can be used. The best one would be listed in the users manual for you to find.
The fuel filter for your Santafe is located in the fuel tank. Hope this answers your question on this subject.
The 2004 Hyundai Sonata has 16 valves.