OK, I know that many believe you cannot tell the condition of your oil by just looking at it or feeling it between your fingers. That a used oil analysis should be performed. However, it is a method I have used for years, if the oil is still not completely black, in my mind, it is still decent. I know black oil may still have some life left in it but does anyone disagree that if it is not completely black yet it is still OK? Of course assuming no fuel or coolant problems. Seems like a way to check for those who don't have the money on an UOA.