"Stir" and "2" mix function no longer operate

Your best option is to replace a 25 year old appliance. the cost to repair will far exceed the monetary value of mixer.

Kitchenaid mixer parts are available from a number of sources aside from EBay, among them:
http://www.goodmans.net/d/933/kitchenaid-stand-mixer-repair-parts.htm

http://www.shipfreenow.com/

http://www.seneca-river-trading.com/kitchenaid-stand-mixer-repair-parts.htm

http://www.mendingshed.com/kamisc.html

You may also need the Service Manual at:

http://www.kitchenaidparts.eu/documents/pdf/service-manual/classic-svc-manual-new-email-version.pdf

They do not use oil at all, they use food grade grease. Any oil that is dripping out is the liquids separating out from the solids in the grease. You either need to open it up and stir the grease u again or remove the old grease completely and repack it with new stuff.

Call the Kitchen Aid small appliance warranty office and they will tell you where the authorized repair person is that is close to you.

Firstly, I think you mean "flour".
Put in your ingredients. Cover the mixer, head and bowl, with a dishtowel. Turn on mixer to "stir" (or lowest speed). But! Mix only for 1 or 2 seconds. Repeat this, with bowl covered, until flour is mixed in enough not to fly out.
Happy baking!

SOUNDS LIKE CLUTCH PROBLEMS .

your kitchen aid has a little device inside called the hall effect sensor. These often come dislodged or just stop functioning. If you are mechanically inclined you can replace this yourself.

Check the motor brushes. You'll see two black plugs with flathead screwdrivera small one, Unscrew to check, if only springs or very worn,youll,know.Its a maintenance problem.

There are 2 possibilities, the attachments are worn out where they go on the shaft, simply replacing them could fix it, the other is the shaft is worn out inside the planetary ( where it spins), if it moves allot, 1/8 " or more from side to side, the housing is probably worn, and the planetary needs to be replaced, easy job, don't know cost, a new mixer may be in order.

I think this link will help you understand what is needed to fix your mixer.

You will need to purchase a gear. Here is link MarBeck should have it.

You may need to replace some grease. Make sure to use a non-toxic food grade grease.