Ouch!!
The file isn't distinct enough for a remote diagnosis, but it certainly doesn't sound good.
Have you recently serviced the engine and used the Mobil oil that you mentioned in your post??
Contact us at
info@flat6innovations.com and we'll be glad to work with you..
I definitely would not run that engine any more at all, that could be the IMS in early stages of failure, the whirring sound is something I am very concerned about