I had to read the posts twice and I still don't think I get it - are you saying your car is really burning oil, as in "going from five quarts to four quarts?"
I don't think I've ever noticed a difference in the dipstick level from just after an oil change to just before.
And now that I think of it, I always pour the old dirty oil into the five-qt bottle that the new oil came in and it fills near to the top.
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