Project I did a few weeks back.

[Blazin]

07 Chevy 1500, 36,000 miles, was starting to rust frame, and bottom of bed.

Drain holes inside wheel wells plugged right full of dirt!




Rust on the bottom of the bed:










Sanded with 80 grit:


180 grit on front panel:








Chassis Saver over all the rust after they had been needle scaled:






Entire bottom side of bed, & inside quarters sprayed with SEM bed liner, then top coated with an inexpensive single stage urethane paint




Frame scrubbed with Super Clean, needle scaled, ready to be sprayed with Chassis Saver, SEM, and paint:


Sprayed, ready to go back together:

[DustyRusty]

Looks great now and that ought to last a long while.  How does an 07 w/ 36k miles get that bad so quick?  Had to be more than a problem w/ the drain holes.  Do they use calcium chloride on the roads there?

[bake74]

Looks great now and that ought to last a long while.  How does an 07 w/ 36k miles get that bad so quick?  Had to be more than a problem w/ the drain holes.  Do they use calcium chloride on the roads there?

     They don't coat the undersides of vehicles like they used to, that is for sure.  They must use something pretty harsh to rust that fast.

[Blazin]

N.H. DOT uses salt, and lots of it!
Two things against this truck. Its 4 miles either way from his house on a dirt road to pavement. Plus he works in Virginia. He is only home 3 or 4 days a week, and even then he has a Acura sedan he drives most of the time. His wife has an SUV she drives. It sits for a week or two at a time sometimes. Plus he thought until I showed him washing it did not include bending at the knees, pulling the rubber plugs out of those holes plus the ones in the rocker panels, and flushing everthing out. I did the rockers, and as can be seen in the pics the bottom edge of the bed quarters too. Also installed some nice heavy duty mud flaps behind all four wheels.

[PromiseKeeper]

In Ohio, they are using a liquid brine on the roads to pretreat before the snows hit. I'm convinced this is even nastier than the stuff they spread on the roads. My concrete driveway never had pits in it until they started using this stuff. Now you can tell where the vehicles have dripped on the concrete. If it will eat concrete, I'm sure it's hard on steel! Time will tell what is going to happen to our bridges!

[bake74]

In Ohio, they are using a liquid brine on the roads to pretreat before the snows hit.

     If you think about that statement for a minute you will know exactly what it will do to metal if left on.
     Adding salt to a road then driving on it, the salt has to mix with water and it takes time to dissolve to make brine.
     Brine solution is used in water softener's to "clean" the media beds that remove the hardening agents of water, so you have soft water.  Bring solution is very corrosive, this is part of what I work on at my job.
     So by adding brine solution already made up to the roads, as soon as it hits your truck it starts to go to work on anything that is not protected.  It is only a matter of time before it will eat through paint or coatings of any kind.
      I would bet money if you coated a piece of metal in chassis saver, stuck it in a bucket of brine solution and injected air, that in a matter of a few days you would see evidence of it eating away at the chassis saver.

[thirsty]

The sad thing is that the underside of that tuck does not look that bad for a NH truck of that age. The owner's driving habits are a big factor in why it looks like that. Not using them every day and also running them on miles of dirt road every time it is driven is a good recipe for rot. The only thing worse would be putting it in a heated garage every time you got it all salted up. Vehicles that are run a lot of miles daily are usually in better condition rust wise here in NH.
This is why we are always doing extensive rust repair on our squares here in NH while being jealous of you guys that don't live in a rust belt.

And nice job Blazin on the cancer treatments for that 07!

[Blazin]

This truck is always garaged in an unheated garage.

[crazedhick3]

Better check those plug holes on my '09 2500! Makes me nervous..........lol

[Blazin]

There are several in the rocker panels of the cab as well.