Because for short term track use the non-detergent allows the inclusion (in in it's place) of anti-scuffing and other additives. It is not meant for street use.
The point is that
synthetic lubricates so well, that it slows down the ring seating and therefore extends the friction condition in the motor, which is unacceptable..
Many factory motors are indeed broken in (for a short time) before they are sent out...the Ford SVO bracket race motors such as my 514 are one example...they are hot run for 20 minutes....
Please provide links to your proof...or no one is going to believe you, Lubrecon.
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