plastic is made from crude oil.
No.
Diesel isn't used in crude oil it is a refined product of it
Yes. Fuel (gasoline) is the product that is the result of the refining of crude oil.
Crude oil is the by product of decaying and fossilisation of animal and plant matter
Yes it is
All plastics are a by product of crude oil.
It is a by-product of crude oil, therefore yes.
Yes, it is possible.
petrol is extracted from crude oil
Pentane is a product of petroleum crude oil, it is a hydrocarbon.
It is a by-product of crude oil, therefore yes.
Some oil riggers will use "pump gas" or what is known as pump runoff but the actual product crude oil is too unstable to use in its natural form .