2*2*10 = 40 cubic feet. Simple!
light diesel oil
not much. it would change the viscosity of the oil. the diesel oil is much thicker than regular engine oil.
Oil in a sealed container does not go bad.
5w30w full synthetic diesel oil
Yes, almost every oil brand offers a full synthetic.
It depends how much petrol was put in. If it was a "full tank" draining the tank and the system would be advisable. If it was just a small amount, the mixture can be cut by adding more diesel with some motor oil mixed into it It is a common practice in times of diesel shortages to use motor oil with a small amount of gasoline added to it in place of diesel. You will have to use your own judgment as to how much diesel and/or oil to add.
It requires a 5w30 or 5w40 full synthetic diesel engine oil. The brand is not important.
60%
A lot
Engine over full, diesel in the oil, excessive blowby.
12 quarts
how much engine oil do you put in a Renault kangoo 1.9 diesel