rick 10/8/2012First thing that points to is valve guides . They are getting worn out . So what happens is when the motor sits over night a small amount of oil leaks past the guides . When you start it in the morning it burns that and makes a smoke cloud . Rest of the day you keep driving off and on and not enough oil builds up to make a cloud of smoke .
mark 11/20/2012The PCV baffle system is likely shot too.
is there smoke coming out of the oil dipstick? if so there are several good kits for this like a FCP groton