To get sap off my X i used isopropyl alcohol. Put it on a cotton ball and wipe the sap off your windshield or hood. If you use it on your paint have some water ready to spray it off ass soon as you wipe the sap off. I am not sure if it will hurt the paint so use the alcohol at your own risk. Alcohol or IPA works great on the windows though.

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Veruca Salt
Willy Wanca's Chocolate Factory