Good explanation. I had a ruckus in a brand new tight STI plated rear diff that would act up on tight turning circles and that one could hear from over two busy city blocks away. It was extremely annoying and scrubbing tires like it was welded shut. Sounded like someone hammering on plate steel.PS: This recommendation does not apply to all racing diff's with LSD's, as they sometimes have extremely aggressive clutchpacks that require such additives to manage severe wheelhop, chatter or push/understeer symptoms.