Saf, olive oil is organic too, and it isn't water soluble.
From
http://www.extension.umn.edu/projects/yardandgarden/ygbriefs/h454removesap.html Question: How can I remove tree sap from my car's exterior?
Answer: Remove pine tree pitch with a wax and grease-removing product. Such products are available at auto supply stores.
Be sure to wash and dry the car before applying the wax and grease remover. Then dampen a clean cloth with the solvent and rub the affected area. It may require several attempts if the sap is very thick or extremely hard. The surface may appear hazy after the solvent evaporates, but a good wax application will eliminate the haze and complete the job.
Or, you can try rubbing alcohol, WD-40 lubricant or Skin-So-Soft bath oil. The way to use those materials is to let them do their work of dissolving (in the case of alcohol) or softening (in the case of oils), enough to rub off the remaining sap. If you use the oil, wash the car afterwards to remove it.