[seningen]

Short trips where the AOS is pushing oil into the intake
-- or extended sitting where the oil might work its way passed the rings.

Either case you would see puffs of smoke on startup.

check your coolant to be sure there is no intermix.

if you suspect too much oil being burned in normal driving
you can check your compression.

You can also check the intake and see how much oil residue is
in there -- it could be your AOS (or aos control) is acting up and its
pushing oil into the intake all the time.

mike