I CAN tell you that the driping-can light ISN'T your oil... And, if you take about $2.49-ish worth of windshield-washer fluid and pour it in the correct receptacle, under your hood, that dripping-can light WILL go away
Or, $0.0000000007/water. Either way, it only cares that the voulmn is low, so, you could prolly fill it with oil, if you want, but I wouldn't recommend it...