That depends on the density of the chemical you are calling oil.
kg is a measure of weight; liter is a measure of volume
There are 1135 litres of cooking oil to the tonne.
830 to 900 grams per liter
Approx 9.1 newtons.
Yes
The density of jatropha oil as a biodiesel fuel is 0.92 grams per cubic centimeter. Therefore, one liter will mass 920 grams or 0.92 kilograms.
10w30
10w30
5w30
10w30
10w30
That depends on the specific weight of that special oil. Only for pure water one can say: 1 litre of water weighs 1 kilogram. Not oil.