If you can't find mineral spirits and alcohol, I can recommend the Autoglym intensive tar remover. I used to live in a flat where the allocated parking space was under pine trees. The car was forever being covered in goo which went solid after a couple of days. I found it was best to put a bit of remover on the goo first and leave for a couple of minutes. Then go back and apply more remover and start to rub gently and the goo would start to rub off. I did this on my VW Bora for almost 2 years with no effect on the paintwork. Now I have a Lexus, I bought a house with no trees in the garden!!!! Problem solved!
Hope this helps.