The cap that says Enine Oil is where you check the oil level and the Engine Oil Fill is where you add the oil... Like hydrex suggested I would check your oil level on level ground after you engine has sit not running for at least 5 mins.... hopefully it is just low on oil... if it is not then I would take it to a trusted mechanic to have the oil pressure checked. Do you have any knowledge on whrn it was last serviced? Oil change , plugs, wires, cap and rotor? That can slso contribute to oil light as it would run low idle. I hope this helps and welcome to the Z! All of us are here to try and help you.