Can used motor oil be turned into diesel?

Question

I know about waste vegetable oil to biodiesel, but didn't know about motor oil.

Answer 1

yes i have mixed it with diesel and it ran just fine, no smoke.

Answer 2

probably not a good idea.

it's likely to have other chemicals that are good for lubrication, but are not good coming out of the tailpipe.

Answer 3

Nope.  Motor oil contains the carbon chains that are too long for diesel (which is something like D10 to D24)

As I understand it is:

C2-C4 are your natural gasses, acetylene, methane, propane

C5-C8 is gasoline - benzene through octane

C10-C24 is diesel

bigger is lubrication oils

even bigger is tars like asphalt

Answer 4

used motor oil can be run through a "re-cracker" plant and turned into plastics with less cost and less pollution

Answer 5

Waste motor oil can be mixed with diesel up to 20% providing a centifurgde is used to clean the oil.