cab rust in dark places
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Junior User
Joined: Oct 2009
Posts: 62
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From: Spring Creek, Nevada
cab rust in dark places
I pulled the shoulder harness in my 78 reg. cab and in my 78 supercab and looked down between the sheet metal and i saw some areas that had a surface rust that you could almost rub off with your finger. Some spots are a little more than that but still not to bad for 32 year old trucks. The supercab may be a little worse at the bottom of the cab corner but not much and no way to tell how bad it really is. Everything seems solid so i guess my question is if i can expect, based on your guys experiance, to get many more years out of these cabs with just the small amount of light rust after 32 years. I guess im hopeing to ease my mind as i keep putting money into these trucks.
Posting Guru
Joined: Nov 2008
Posts: 1,647
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From: Halifx Pa
I would give fluid film a try, it last long and really works. I use it on my dent, car, snowblower etc,....
Fluid Film® | Corrosion Preventative, Lubricant and Rust Inhibitor
Fluid Film® | Corrosion Preventative, Lubricant and Rust Inhibitor
Senior User
Joined: Feb 2009
Posts: 328
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From: northwest,WA
what is your vs things like POR or any of the "rust eliminator" products (two separate category's of product there a remover and a paint over)
Cargo Master
Joined: Jan 2008
Posts: 2,219
Likes: 190
From: Colorado Springs
It is a waxy oil that won't evaporate like wd40 will, but I doubt it will last as long as heavy duty anti rust from eastwood. I have used both, and like them both. Fluid film says that their stuff wont dry out in an enclosed space, but i prefer something that leaves a thick coating like hd antirust, but it wont creep across surfaces like fluid film, so if it is a very difficult place to get, use fluid film. I am going to use a combination of the two, but you have to use the fluid film last as nothing else will stick to a wet surface.
You wont get por15 in there, especially since you have to do a multi step process that involves washing with water to neutralize, which is out of the question inside your cab.
My suggestion is get a few cans of fluid film and spray a ton of it all around the perimeter after pulling out your headliner, pull out the light switches on the door jambs and spray in there and use hd anti rust inside your doors where water runs and underside corners of hood.
You wont get por15 in there, especially since you have to do a multi step process that involves washing with water to neutralize, which is out of the question inside your cab.
My suggestion is get a few cans of fluid film and spray a ton of it all around the perimeter after pulling out your headliner, pull out the light switches on the door jambs and spray in there and use hd anti rust inside your doors where water runs and underside corners of hood.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,326
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From: Middle TN
One thing that rust out the cab corners, there is no drain holes. After years of service these trucks will begin to leak in water at the roof seam. The water drips down to the lower cab corners and has no place to drain. I think it helps to at least drill several 1/8" drain holes below the lower cab corners to counter act this rust problem.
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Lead Driver
Joined: Mar 2004
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Make sure your rain gutters still have seam sealer in them. After 32 years I'd bet it's starting to fall out. Thats a way water can get into the pillars and run down into the pinch welds and to the lower cab corners. The pillars are a real bad place to get rust started. Once it gets started between the pinch welds there is no way to get in between the panels with a blaster to stop the rust from coming back.
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Make sure your rain gutters still have seam sealer in them. After 32 years I'd bet it's starting to fall out. Thats a way water can get into the pillars and run down into the pinch welds and to the lower cab corners. The pillars are a real bad place to get rust started. Once it gets started between the pinch welds there is no way to get in between the panels with a blaster to stop the rust from coming back.
Cargo Master
Joined: Jan 2008
Posts: 2,219
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From: Colorado Springs
Do this repair BEFORE using the fluid film.
Cargo Master
Joined: Jan 2008
Posts: 2,219
Likes: 190
From: Colorado Springs
One thing that rust out the cab corners, there is no drain holes. After years of service these trucks will begin to leak in water at the roof seam. The water drips down to the lower cab corners and has no place to drain. I think it helps to at least drill several 1/8" drain holes below the lower cab corners to counter act this rust problem.
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