Supply year, miles, options, condition, and color. Pix would help.
I would be happy to try to place a value on the car.
I would concur with Jim. AF in the oil indicates a breach. If you are lucky, it is the head gasket. Get it fixed, have the guy flush the oiling system, fresh oil and prayer.
Trying to sell this car the way it is will not fly. You will take it in the shorts.
Why-the buyer will assume it needs a new engine and price accordingly.
Get to a real mechanic soon! Our advice can only take you so far.
