My car was covered with wet leaves for half of autumn and now it has etch marks and stains on the paint. Whats up with that?
As leaves decompose they produce tannic acid, which, if left on the car, will cause etching or stains. Treatment is the same as for all other types of etching. Keep your car clean of leaves and all other organic debris! If you’ve ever seen a puddle or a pond with leaves on the bottom, you’ll notice the water has probably turned brown from the acids of decomposition. This is not what you want on your car. Stains are treated on a case by case basis, either by buffing, chemicals, or whatever creative ideas the detailer has.