This is true.
I would focus elsewhere, like perhaps the oil line has a tear?
If you do use Teflon tape on any connection, be very careful in its application. Do not use too much andhavebits of tape pushing thorough your oil galleys. My brother once seized a truck engine that way. I use Teflon containing pipe dope, personally. The solids are much finer, and it is pretty versatile as a sealant.