WIth winter around the corner, I was wondering if you guys had any good tricks for rust prevention. I usually just try to keep the bottom door seams lubricated with WD-40 or oil, and I usually wire brush my frame, and hit it with rust-converting primer then spray can undercoating on a regular basis. Some say this does not do much, but obviously sealing off a rusty spot from oxygen is going to slow down the corrosion process. Anything else I should be doing? Luckily my truck is not a DD, but it still makes the trip up north snowmobiling on some weekends.