I want to bring to light the fact that a clean looking engine on the inside does not mean the engine is in good condition. anyone actually taken down a good clean engine to find cooked baked piston ringlands? how about cylinder wall wear? I have taken down many engines that looked clean but consumed oil and smelled bad as they ran down the road. I find it funny that dino oil changed often cant stop the deposits from wiping out ring seal due to wear in the long run. I have a few examples if anyone would like to see?