underbody rust

any way to prevent moisture from rusting out the underneath of a car(not running) that has 2b left outside over the winter. they just draw moisture from the ground & brake lines.. ect. just rust away.

Do not park on the ground, park on concrete or black top, also, if the car was new and the frame clean it could be sealed with POR15, not an easy job, though.

I don't have the luxury of concrete or black top to park an unused vehicle on my property, so I have used a heavy duty plastic tarp in the past with good results. That might be another option if you don't have concrete or black top to park your vehicle on.

Undercoating works pretty well.

thanks to all !!!