Flea and Mange treatment?

Can you use old motor oil to get rid of fleas and mange on your dog?
I know this is silly, I am being asked to ask this question.
Please no smart remarks. Any advice is appreciated.
Thanks in advance!

No, you can not. It won’t do anything about the fleas or the mange, and it will harm your dog.

Is there some reason why the dog owner won’t go to the vet?

Looking for Mange and Flea Treatment, look here.