To find the correct oil, you MUST check your owner's manual. This manual will specify the recommended viscosity (like 5W-20, 5W-30, etc.) and the type of oil (conventional, synthetic blend, or full synthetic). The information sticker on the driver's side doorjamb might also offer a clue, but the owner's manual is the definitive source.
Without knowing the engine size and type, any oil recommendation would be a guess and potentially harmful to your engine.