PEH, I was not debating it ... but had mentioned that I was " philosophically opposed to it " (in general) the sucking out the top.. but thought it might have seemed that I was obsessive about the 'amount' of oil,, instead of that I like the idea of the flow being capable of taking more of the grunge out of the pan....I AM capable of being obsessive about some things.. but I am not about the 'amount' of oil cleared each time.. LOL.... Greg