I'm not way into aluminum rods but from what I know they are very elastic and they will stretch as the piston changes direction at TDC.. They do grow in length (and in term compress) while running hard even after reaching operating temp. The temp thing is more about stabilizing the oil temp and it's ability to do it's job.

Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.