OK so i'm have a minor panic attack. I just checked my bike's fluid levels and i think i may be out of oil! my oil light isn't on tho. There are two fluid access ports on my bike one being on the top with a dip stick and the other on the side *same side as the dipstick* which requires a screw driver to open. i stuck my finger in the hole and couldn't feel ne thing. What kind of fluid should i put in it