Rusty inner door

This is inside of the door on my daughter's car. What can I do to prevent it from getting worse?https://uploads.tapatalk-cdn.com/201...5a64f9d55d.jpg

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Wire wheel, self etch primer, hit it with paint

Or scrape off what you can and hit with some chassis saver/POR 15.

No matter what you do being that its on the seam it will eventually get to the outside.

if it's a factory paint color, buy a better conditioned door of the same color to be its replacement when the time come.

Used engine oil

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Originally Posted by 1BADAIR

Used engine oil

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I usually squirt some engine oil inside the door to keep the inside of the seam wet with oil.