the oil to the fuel tank is a choice,if you dont want to burn it then just pump it to a container,would require a short hose and a container.
i know folks who burn 10% used motor oil on a steady bases, and remember it gets filtered as it passes thru the fuel filters.
also if one is to believe you had to start this process from the beginning of a new engine then why do we see so many post about the cars that wont start because of loss of compression as they age? if you have an engine that starts and runs good then why not save it from futhur wear as much as you can??
larry perkins