Does anyone know the oil capacity of a 2000 3.0L Dodge Caravan?

My passenger door lock makes a buzzing noise when the doors are locked or
unlocked, BUT when we use the button to unlock the doors - the front
passenger door doesn't unlock - we have to reach over an manually lift the
door lock.  How do I remove the door panels to check to see if a ...

 I've used regular motor oil all my life (mostly Phillips Trop-Artic or
Valvoline) with no problems.
 I live in the midwest and it gets well below zero at times, as well as
very hot in summer.

as soon as the car is started and remain blinking in all 3
positions...rt-nuetral-left...all bulbs are working and fuses are
good...any ideas would be appreciated.

I smell an odor like burning toast from the rear. It seems from the real
wheels. I checked all the fluids. The brakes have also been checked. And I
also did rotation. The smell is still there after driving about 10
mintues.

my oil light glows dim and then comes on every once in a while at stop signs
.as soon as i drive away it goes out and stays out. any ideas? and yes it's
full of oil.