I have no update except that the engine is running great at 267K miles. Remember, I had the head gasket replaced 3K or 4K miles ago because of a broken head bolt on the transmission side of the motor. That caused an oil leak. Anyway, I just checked the oil 2 days ago (which I seldom do - no need) and I'm down exactly 1/2 quart after 3,700 miles on fresh oil and filter. But remember, this K24 motor never lost oil, but VR&P did clean the varnish off the cam cover baffle! IMO VR&P does what it claims.
Scott