hah, a minute. bob's site takes way more than a minute. makes my head spin and i feel dumber after reading.
anyway, i think the point you're trying to make is that at start up, a lower weight oil will flow better and provide more lubrication. point taken, but not in my experience. 0w are meant for cold ambient temps and i don't drive the car when it's under 50º. if the point is that it will be harder for the 50 weight to flow at operating temp than the 40, point taken and i'm aware of that. that's why this change is a "try".
if i missed the point, please feel free to make it. i can be thick (pun intended) sometimes.
