Ever since I stripped off the moldings along the bottom of the doors and found bubbling underneath the beading I had it repaired, painted, and now stored for the winter. The oil spray should keep the corrision at bay but I don't trust what's built up inside the doors of these cars.
'05 GMC Sierra SLT Z71 CCSB 4x4
'02 Regal LS
'00 740i Sport