An update to my above post ^^^^, which was after just 1,200 miles of using Valvoline R&P for the first time in an exceptionally well cared for 250K miles plus Honda Element with a K24 engine (500 mile first, then 1,500, then 3,000, then 5,000, then 5K every since. Either Castrol Edge Black Bottle or Gold Bottle for the life of the of the vehicle so far.
The following picture is after 1,700 miles on the second oil change of R&P. This baffle has been vanished for as long as I remember because it gets no direct oil splash.
Compared to the first picture you can see R&P is cleaning noticeably, even in an area I consider hard to clean.
For the third change, which I did this morning, I'll run it about 2,500 miles.
FWIW,
Scott
Edit: For grins I did a compression test today. Warm engine. Specs from the factory service manual for new engine is 185 psi; for "serviceable engines" no more than 28 psi difference from high to low, and no less than 135 psi. For our Element #1 175, #2 172, #3 178, #4 185. But no means am I saying this is because of R&P. Rather, I am 100% confident it's because of my meticulous maintenance, my respectful use of the vehicle, and the K24 engine itself. At any rate, I think the results are remarkable given the engine had 254,096 miles on it when I tested it this morning. Hail the mighty K24!!!
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