Since we are on pick up trucks, Ford Rust Question

I have a 2008 f350 short bed always been a northern truck. Its pretty clean though and not much surface rust underneath. However I sprayed it of today to get the salt off and noticed three little bubbles on the left rear wheel well. What the best way to fix this? Take it in now? Wait till it starts to show more? Or just let it take its course? How fast does it spread? Its not bad at all now and hardly noticeable, however I know and its going to bother me.

Jimmy
 
If they are made the same as the 2001's are you won't stop it. They put a rubber weather strip between the outer skin and wheel liner and the salt get into it and you cannot get it out. Every ford super duty around here has the same problem. Mine is getting real bad. I woulds like to get my hands on the person who that that rubber strip was a good idea
 
If there are bubbles it is rotting from the backside out.You could take your keys and push right through those bubbles without much effort.If I were you as soon as spring arrives take it to someone who is good at rust repair have them clean those spots well and they will get a LOT bigger as soon as he starts at them.Make sure to use patches or repair panels don"t let them use any type of filler or fibre glass.
 
salt causing rust prevention pretty much has to start with the first owner on (frequent washing during salt exsposure). once the cancer starts, its an on going battle. you can have body shop fix it if you want, but just a matter of time and it will bubble somewhere else or on the other side. especially if it stays out on the road in the weather. My 2 cents.
 
I've got a 92 that did that at the rear fender by the rubber strip. Rusted through and about 2" up and has not gotten any worse the last 6-8 year's. If it wasn't for that the old truck would still look pretty good.
 
I have heard of a few people removing the box and flip it upside down. They take the inter wheel wells out and fix the rust by removing the rubber strip and then using herc liner or a heavy duty bedliner sprayed on it. I don't know if it worked or not. Mine rusted about 2 inches above the rubber strip and has not gotten any worse. I have been looking into rust repair panels but the weather has to warm up before I take on that job
 
It is rusted threw...

But what I've done ever since I owned all
my Fords is spray them on the underside
with the used engine oil drained from the
truck... It's about the only way to help
a vehicle last in out climate & with what
the put on out roads.
 
The only way to fix it is to cut out the effected area and weld in a patch. The correct method is to butt weld the patch. Don't let someone overlap the patch. The lap seam will catch/hold salt and water and you'll have rust problems again real soon.
 
I worked with someone from Minnesota. He said his town had a car wash which shot water underneath as you would drive over it. Sounded like a good idea. Stan
 
So what ever happened to the two sided galvanized steel these things were sposed to be made out of?? It's a cryin' shame when a 30,000-40,000 $$ truck will rust out in 6 yrs or less. I've noticed that from 2000 on up the GM trucks have the same problem. Seems the '99 on back a ways lasted a lot better. My '99 Suburban has no rust anywhere including underneath but right on the window sticker it touted the two sided galvanized metal it was built with. Here in MI even Dodge from 2004 on back are rusting above the rear wheels. One hates to get the "lawyers" involved but where is Ralph Nader or other consumer advocates when it comes to this corporate rip off???
 
Ever see this hoods on fords all white And corroded well someone forgot to let the body men am the assembly line know to change sand paper between aluminum hoods and steel cross contamination then sealed in with paint 3-4 yrs down the road they made that bubbly white corrosion ford had a tech service bulletin on it. Ford wasn't know for their bodies just heat and ac lol
 
That liquid solution they are using on the roads now is terrible for your vehicle. Here in Iowa they sometimes make it with calcium chloride. You know how corrosive that is. My cousin is a bridge contractor,he says it shortens the life of bridges consideriably.
 
Oil spray is the only way to slow it down !

I had a 1996 Dodge and sold it a few years back and it still was solid. Tried to spray it every year.

Many of these cars made anymore they put a lot of foam into them and this traps the moisture.
I remember some ads about Ford trucks where they were to fill all the cab with spray foam to quiet them down. Bet that makes them rust FAST !

They can make them last but why would they want to ? Sell more when they fall apart. I suspect all the special metal treatments we heard of off and on over the years costs plenty of extra money to do so to keep profits high they cut them out.

Guy at work had an old 1985 ? Ranger. Not much left of it but funny thing was the inside of the bed was mint and at the sides where the outer beds sides rusted off you could see the insides looked mint looked like it was galvanized like a guard rail !
 

I agree that as has been said the damage is done. I spray WD 40 up in there so that it trickles down onto the rubber, penetrating and displacing the moisture.
 
The superduty box wheel flares are terrible for rotting out. My 2001 had them done in 2009 or so, I redid them again in 2013 with proper patch panels. I'd do em now, it grows quickly.
 

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