I bought my X used. I did my first oil change myself within the fisrt week I bought it because I had no clue what was in it for oil. I took out a bit more than 4 litres (4 quarts and change) from it. I remember because I put the used oil in an empty 4 litre jug and I fill it and I still had some left in the drain pan. So it is possible that they put 4 quarts in. However, it only took me 3.3litres (3.5qt) to bring it to the full mark.