changed the oil and filter in the sante fe today. 1,042 miles. i think the first scheduled one is at 7,500, 3,000, severe use. {all of us} i believe in doing the first one early. drained oil came out very dark and thin. {surprise!} i think they come w/ a 5-20 as factory fill. used a new purolator filter, and pennzoil 5-30 conventional. lots of gold streaks in the old oil as well, which was expected. didn't really feel seat o' the pants diff, but sure made me feel better. does anyone know what hyundai uses as a factory fill for these, brand wise? i'd like to keep the same in it, even if i need to take my own oil along when it's time for it's dealership change. the manual calls for 5w20's 5w30's preferred, and 10w30 acceptable. thanks