Compression Ignition Addict
Join Date: Feb 2011
Location: upstate ny
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Pry apart the seam at the bottom where it is rusting-once you have it separated, sandblast or wirebrush it until there is no rust left, POR-15 it, then paint it.
That seam is notorious for trapping dirt, water, and everything else the weatherstripping keeps out. If you don't open it up a bit so you can completely eliminate the rust, it'll just keep coming back. Whenever I wash my truck I pressure wash the heck out of that area. Keeping it clean helps prevent the issue.
2005 Lariat CCSB F-350 SRW
300,000 miles and going strong
12" fabtech lift with 40" Xterrain's on M/T classic locks, Adjustable track bar, Bilstein 7100 reservoir shocks
Edge juice/attitude CTS, SCT with ID tunes, Snow meth. injection, Diamond eye 4" exhaust, 03 turbo, ARP studs, Sinister coolant filter
2010 stone seats/console, pioneer avic d3 with backup camera/bluetooth
Viair 450c compressor, dual 2.5 gallon tanks, air horns rated @115db