How to prevent Mark VIII rust (especially rocker panels)

Shevretti

Registered
Hello!

Finally after a few weeks of shipping from Houston, TX, I picked up my "new" '97 LSC from port in Bremerhaven, Germany and drove it home to Krakow, PL. It's in perfect condition inside-out with only 80K miles (was 75K in October).

The main reason I got it was that fixing my '97 Mark VIII (Base-Ivory) would cost over 50% of what I invested in the new LSC and it will still have 140K miles on the engine with badly rattling timing chain at startup.

Here are some pics of how rocker panels rusted in my Ivory Mark VIII - they weren't much better when I got it. I'm not driving the Mark VIII too much in winter, but sometimes I have/need to. I noticed that in every Mark VIII rocker panels rust in the same spots: left side rear in front or rear wheel (the worst), other side in front of rear wheel is not that bad, and front left side of rocker panel has a rusty crack.

Is there a way to prevent this kind of rust in these cars? Is it true that sunroof drains cause this kind of rust? Should I drill vent holes in the new LSC where the sunroof drains go? Or maybe I should also seal something?
What caused the cracked rusty front part of rocker panel? Is it possible that driving with front suspension down is causing a stress in this part of the vehicle?

Thanks in advance for helpful info!
Mariusz...
 

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