As a side note: I also read somewhere, maybe hear that a mistake some people have made is when bringing a true barn find (a truck that has not run in decades and still has the old non-detergent oil in it) back to life is they fail to drop the oil pan and clean all the sludge out it.
This will end up in the oil with new detergent oil breaking up the sludge (detergent) and re-introducing it into the oil.
That's a really good point, Dave!
