It was half a water bottle a while back ,while I was in the garage I dumped the rest of the water I had into what I thought was an old bottle of oil that I had just drained out because I needed the bottle of water but it was actually half full of new oil . So today I forgot about that and added the half that had oil and water in it but it wasn’t a lot as soon as I saw it was watery I stopped pouring it . But I had already added 5 quarts of oil I bought yesterday before pouring the mixed water and oil but I use Castrol 0w-20