On Wed, 21 Jul 2004 22:28:37 -0400, richard hornsby
> wrote:

>
>Hmm, if the car burns 4 quarts of oil every 3000mi, and I add a quart
>every 800 miles or so, then I should never have to change the oil,
>right?

More or less, but you would still have some crud drop-out in your oil
pan which could pile up if not drained.
MR