my Newmar

MountainAir05 wrote:
You also could bead blast it clean, then seal it. Do not use sand.

That's a lot of work, and you will miss some, and it will be back. you miss some, then cover it will continue and covered you won't see it.

wash it as best you can, treat it, watch it. the bottom of the coach chassis takes a beating the covering (what ever you use) will get chipped away, So it is a continual fight to keep it nice.

I'd bet that 99% of the coaches that are 5 years old or better have corrosion, and the owners never looked.

You also could bead blast it clean, then seal it. Do not use sand.

That'll buff right out.

This might make you feel better.
This rusted and dropped down at highway speed.
Drivers side completely rusted and one bolt holding passenger side
Going to weld it up and use it just to snow plow our lot

Looks to me like a hurricane rig.

Bruce Brown wrote:

soren wrote:
You have nothing more, or less than a chassis that has been operated in conditions where it was exposed to "brine", which is the anti-icing liquid used by many states in the northern part of the country. Brine is extraordinarily corrosive, and can do this damage in one exposure. The "damage" is cosmetic, prevalent on most newer vehicles exposed to brine treated roads, and is something that many, many RVs experience and pay no attention to. If you want to address the issue, research "Fluid Film". It is made specifically to treat and prevent chassis rust on vehicles. There are customer reports, with pics. on their site, of older vehicles, like Jeep Wranglers, that are operated all winter in northern salt and brine obsessed states. Most of these older untreated vehicles are rot heaps, but using fluid film regularly can keep them looking new underneath.

Good luck, and relax. The coach builder has nothing to so with this, and in our litigation happy country, destroying vehicles with brine, and billions of pounds of salt, is secondary to avoiding lawsuits by texting twits in SUVS. These twits don't do personal responsibility and believe that every road should be clear and provide safe traction 24/7/365, no matter how bad the weather is. Naturally, when they crash, it's somebody else's fault. So the toxic waste (brine and salt) spreading starts well before the weather even hits.

The question of safety and damage to the components underneath would leave any truck mechanic in the north laughing. On a scale of 1-100, with 100 being "sorry, but your frame rotted in half, and the rig is a total loss", you aren't even hitting a one yet. Wire brush whatever bothers you, soak the whole thing in fluid film, and see if you need to reapply the stuff, a year or two from now.

^^^ This.

Living in the northeast this is nothing. Keep it out of the brine and it won't get any worse.

We've ordered (3) new motorhomes, on all (3) we've made 100% sure there would be a 0% chance they'd be delivered when there was any chance of salt and/or brine.

We also don't schedule any trips when there is a chance of salt and/or brine usage. We also keep ours in a heated garage all winter.

RustyNewmar, ours is pristine with no rust. I'd be willing to help you out and trade with you. I'll take my chances on yours. :W

:W

soren wrote:
You have nothing more, or less than a chassis that has been operated in conditions where it was exposed to "brine", which is the anti-icing liquid used by many states in the northern part of the country. Brine is extraordinarily corrosive, and can do this damage in one exposure. The "damage" is cosmetic, prevalent on most newer vehicles exposed to brine treated roads, and is something that many, many RVs experience and pay no attention to. If you want to address the issue, research "Fluid Film". It is made specifically to treat and prevent chassis rust on vehicles. There are customer reports, with pics. on their site, of older vehicles, like Jeep Wranglers, that are operated all winter in northern salt and brine obsessed states. Most of these older untreated vehicles are rot heaps, but using fluid film regularly can keep them looking new underneath.

Good luck, and relax. The coach builder has nothing to so with this, and in our litigation happy country, destroying vehicles with brine, and billions of pounds of salt, is secondary to avoiding lawsuits by texting twits in SUVS. These twits don't do personal responsibility and believe that every road should be clear and provide safe traction 24/7/365, no matter how bad the weather is. Naturally, when they crash, it's somebody else's fault. So the toxic waste (brine and salt) spreading starts well before the weather even hits.

The question of safety and damage to the components underneath would leave any truck mechanic in the north laughing. On a scale of 1-100, with 100 being "sorry, but your frame rotted in half, and the rig is a total loss", you aren't even hitting a one yet. Wire brush whatever bothers you, soak the whole thing in fluid film, and see if you need to reapply the stuff, a year or two from now.

^^^ This.

Living in the northeast this is nothing. Keep it out of the brine and it won't get any worse.

We've ordered (3) new motorhomes, on all (3) we've made 100% sure there would be a 0% chance they'd be delivered when there was any chance of salt and/or brine.

We also don't schedule any trips when there is a chance of salt and/or brine usage. We also keep ours in a heated garage all winter.

RustyNewmar, ours is pristine with no rust. I'd be willing to help you out and trade with you. I'll take my chances on yours. :W

That rust is clearly from salted roads and using unpainted or uncoated metal parts is a manufacture issue. Not cleaning the chassis upon delivery is on the dealer but even if they cleaned the chassis, any part not painted would still rust.

Doesn't look like any real damage so far so cleaning it up and coating shouldn't be too hard.

This is the dealer's issue and the manufacturer is not going to tell anyone it's safe to drive. How could they make a statement like that? You could have an accident on your own and blame the rust.

Tom/Barb wrote:

RustyNewmar wrote:
Dear fellow RV'ers, here is a link to the pictures from underneath our brand new Mountain Air. Please note most of these shots were taken by the dealer prior to us taking delivery !

https://imgur.com/a/7InJw

Thank you, Paul & Kim.

I do not know how much Newmar has to do with how a coach is treated or used after sale. Your pictures show mostly chassis parts that are rusted. It looks like the rust is mostly surface rust, and not a safety issue.
If this were my problem, I would spray the whole chassis with THIS Then keep an eye on it. see more rust, spray it again.

This stuff works well applied with a small garden pump up sprayer.

BINGO

I was going to say the same thing, might as well treat the rust now cause rust never sleeps, don't wait months or years or for the dealer that wont come thru, start fixing it today or else..