>t idle.  Then stop and add a fifth quart of oil and make the return
>trip at 70 mph and note the oil temperature and pressure.   I bet you
>will then be looking for someway to remove that last quart of oil
>because of the dramatic differences.  I suggest you just drain the oil

With my van it would be gone by the time I got home.  It uses hardly a drop
if the level is at midpoint on the dipstick or less,  doesn't like and will
remove anything over .

Dan Fuller
'90 Carat