Yes! It might be time for another test with a new engine. Then run the Valvoline Restore and Protect for 500K miles like they did with their other products, and do another tear down.Valvoline Restore & Protect wasn't tested for 500K miles. It was Valvoline full synthetic and Valvoline conventional that was, with 10K OCIs. Then they ran Restore and Protect in them to see how it cleaned the deposits achieved over the 500K miles with the other oils.
Hey Valvoline, how about it!!