Greg,
I never got the message about your jag, but I gather you had water in a
door. Here in VT there's a country rust preventive measure I recommend,
called "oil undercoating." It is simplicity itself; you spray the bottom
of the car with used engine oil.
It works beautifully, the oil creeps everywhere, especially into lapped
seams. The problems are that you have to repeat the treatment once or
twice a year, horrific (but very protective) layers of oil and dirt build
up, and it washes off of areas where water splashes.
I use a variant of this. I don't spray oil under the car, but I do take a
pump-type oil can and fill it with clean engine oil (cannot abide the
thought of the acid in used oil), and when the mood strikes me I
simply squirt a shot or two through the drain holes that lead into doors,
rocker panels, and other box sections. I have had apart a door on a
Blazer (10 yrs old) and found that the oil had spread throughout the
inside of the door, and that it had not rusted despite only being
protected by a coat of primer.
The only downside is that oil will creap out of seems (just kidding, spell
checkers) and make black smudges along the bottoms of the doors if you let
the car go a long time without washing.
Ray Gibbons Dept. of Molecular Physiology & Biophysics
Univ. of Vermont College of Medicine, Burlington, VT
gibbons@northpole.med.uvm.edu (802) 656-8910
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