There are a few things that have me alarmed in this thread.
First off, it is my understanding that the supercharger uses special supercharger oil, not 5w-30. As mentioned, I believe it is made from animal fat/ proteins. It usually doesn't have to be changed that often.
Second, motor oil, synthetic, 5w-30 is fine, etc. Synthetic with good oil filter usually lets you get away with extended change intervals.
Keep in mind, they are 2 completely separate entities, and it seems like they are being used interchangeably, which is something I wanted to be sure was clarified.