Warranty|page 12 WHAT IS NOT COVERED UNDER THE NEW VEHICLE LIMITED WARRANTY? customer-applied chemicals or accidental spills. page 13, Damage Caused by Use and/or the Environment“The New Vehicle Limited Warranty does not cover surface rust, deterioration and damage of paint, trim, upholstery, and other appearance items that result from use and/or exposure to the elements. You, as the owner, are responsible for these items. Some examples are:
• road salt
• tree sap, bird and bee droppings”

Owners Manual| page 264, Cleaning the Exterior“Wash your vehicle regularly with cool or lukewarm water and a neutral pH shampoo, we recommend Motorcraft Detail Wash. Immediately remove fuel spillages, bird droppings, insect deposits and road tar. These may cause damage to your vehicle’s paintwork or trim over time.”