Sap = bane of paintwork

Sap.
Essentially the liquid thingy inside trees. Sort of the lifeblood of the tree.
Now here's a good lessons to be learned:
Some tree saps are hazardous to paintwork.

Believe it or not, the sap of some the of trees at my house carpark are corrosive to paintwork.
At first, my wife did warn me about it. Cars parked under some of the trees there run the risk of getting sap from broken twigs onto the painwork. If not washed or cleaned immediately, it will actually eat into the paintwork, leaving behind a smudge and, if not treated, will actually eat and cause rustspots on the body.
Well, I became the lates victim. It rained heavily last night, snapping off some of the twigs off the tree near the Ghost. Some of the sap splattered onto the tank. Overnight, it has now left 3 spot marks on the tank. Even with repeated water, WD40, GT85 and waxing, the spots are still visible upon closer inspection.
Sigh.......