I personally am running amsoil interceptor 2 stroke oil. I know there is a potential of "coking" the bearing, but these turbos are designed to run lots of miles and I know my turbo will only get a few thousand before a rebuild, so I figured why not run what my sled runs in case I need to add some to the turbo oil, or some of the oil get ingested into the compressor side through a blown seal... This is my reasoning anyways...