Turtle Wax's Bug and Tar remover works well. I haven't tried it on tree sap though.Nada. I bought the Tarminator...used as directed but the nasty tree sap is still there!!! I think it's pine tree sap...not that it matters. I've started scrubbing it off, but I have to be really gentle not to damage/scratch my paint.
It's fairly likely that they've got magnetti marelli lights, making them shitty italian plastic.Not that i know of. I guess those lights just have to be repolished every now and then, because of shitty french plastics.