"Mine has a KNOCK and piston slap."
This quite a bit different than an engine with only piston slap. A knock is the beginning of the death knell.
In my humble opinion... let the dealer repair it before the factory rep calls it owner abuse...
Flash point 365 F?
This does not meet the requirements for GF3, in fact it is less than Mobil Drive Clean which is known for it's evaporative nature. Is it the oil or Blackstone Labs?
