Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 08-22-2015, 09:02 PM   #15
Senior Member
alpha99's Avatar
Winnebago Owners Club
Join Date: Apr 2013
Posts: 928
How much rust is too much - fix or trade??


POR15 is a multi-step process, but you don't have to remove all the rust - it actually bonds to the rust. The result is bulletproof and will last the life of the coach. Auto restorers use it. I did some of the underside too.

I did my battery bay after battery spillage there. It is a mess to work with, but love how it turned out.

And you're right, use the gloves or you'll never get it off you! Great stuff. Would be a big, messy job to do the entire underside, though...

alpha99 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-22-2015, 09:06 PM   #16
Senior Member
KIX's Avatar

Join Date: Dec 2006
Location: St. Augustine, FL
Posts: 3,579
I agree with Clayobx. Ospho is a good product. For hard to access areas you can put it in a spray bottle and spray it. There is no one step process that will work. Get the flakey stuff off pretty soon......don't put it off.

'02 Ultimate Advantage 40J Spartan MM - Cummins ISC
2013 Jeep Rubicon JK Unlimited
KIX is offline   Reply With Quote
Old 08-23-2015, 06:02 AM   #17
Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 727
Dump it

I live in northern New York state a few miles from the Canadian border. I also own an auto-truck repair shop. NY state has the well earned reputation for having the worst rust conditions for vehicles of anywhere in the country.
Our shop deals with rusted vehicles on a daily basis. Brake lines, fuel lines, frames rusting through, exhaust manifolds rusting away. After five years up here you can expect to start fighting this losing battle. Rust shows its ugly face everywhere. Every nook and cranny under a vehicle is a virtual rust trap.
Our roads get a dousing of salt and sand constantly throughout the winter months. In the event of a weather report predicting snow or icing the highway department trucks are out salting and sanding the roads. Bare blacktop turns white from spreading salt. This bare road policy all started in 1980 when the winter Olympics were held in Lake Placid NY. Our governor wanted to have everyone coming here to have a "good experience" while driving. When highway superintendents saw all the overtime hours available salting and sanding roads it became a normal routine to go out with the sanders even on forty degree days if they even suspected an upcoming storm. The vehicle owners in our state have paid a heavy price since.
I bought a 2002 class A MH this spring after looking for two years to find a rust free unit. This MH has never seen a road in the winter and had been stored in a clean dry building from September to May since it was new. It will get the same treatment as long as I have it.
From my experience of fighting rusted vehicles on a daily basis I can tell you, you will never win the battle with rust. Clean, scrub, brush, spray, rub, seal and paint all you want but rust is like a cancer. You will slow its progress some but it will keep coming back.
Cut your losses and move on.
LETMGROW is offline   Reply With Quote
Old 08-23-2015, 08:09 AM   #18
Senior Member
Join Date: May 2010
Posts: 692
Originally Posted by scenic route View Post
Brake fluid is designed to be hygroscopic. Over time, system condensation/moisture that is held in suspension can and will cause internal line degradation as well as in other brake components. The general recommendation is to flush the system with fresh fluid every two or three years.
Just so folks do not get confused....this thread pertains to a DP (air brakes, no brake fluid, air hoses which are rubber and do not rust).
1998 American Eagle 40EVS
FormerBoater is offline   Reply With Quote
Old 08-24-2015, 07:45 AM   #19
Junior Member
Join Date: Aug 2015
Posts: 3
Hi everyone. Thanks again for the great feedback. I'm going to go ahead and and wire brush it After I scrape it down, I will use an air compressor to blow off any loose flakes, dust etc. I'm still still a bit confused, after I scrape and blow, do I still need to wash it down and put anything on it before applying the POR or Ospho? Also, is it okay to just paint over the bolts and fasteners? Is there anywhere I should not put the POR or Ospho?

I had a pretty bummed out weekend thinking about what to do and as much as I love the coach (other than the rust...), I decided it's probably best to start looking for a replacement. I keep asking myself though, is it better to stay with the evil you know or move to another coach which may have its own set of ailments. And when I consider the cost of a brand new coach, I think about how many repairs I could make for that same amount of money. It all makes me wonder how many other folks had problem coaches, put a little lipstick on them and sold them off to some other unsuspecting buyer. Oh well, first things first - I'll get the underside coated and go from there.

Thanks again --
AK_smith is offline   Reply With Quote
Old 08-25-2015, 06:27 AM   #20
Senior Member
Clayobx's Avatar

Fleetwood Owners Club
Join Date: Dec 2011
Location: Willow Lakes RV & Golf Resort, FL
Posts: 3,082
If you have any deep indentations ie: loss of steel, it would be advisable to use the fiberglass two part filler I mentioned. It bonds well. On occasion I've used West two part epoxy with fiberglass micro balloons, small microscopic fiberglass spheres. Use an inexpensive plastic spreader to shape the thick mixture. You may have to laminate the product or it will sag. The West epoxy is a permanent fix! (20 years boat yard owner operator). I then go one more step and clean throughly with denatured alchohol, Ospho, metal primer, then rust preventative enamel or spray undercoater, a rubber based chassis sealer made by Rustoleum (sp).
Clay & Pebble.. Miss Butter our sweet Goldie (Jan. 2005-Jan. 2015) Sissy our Border Collie
2012 Providence 42 M. Spartan Chassis, 450 ISL
Ford Edge toad, RM All Terrane, TST TPMS, SMI Air Force One, RVM95....
Clayobx is offline   Reply With Quote
Old 08-25-2015, 11:02 AM   #21
Senior Member
alpha99's Avatar
Winnebago Owners Club
Join Date: Apr 2013
Posts: 928
This should answer your questions regarding POR15 application :

alpha99 is offline   Reply With Quote
Old 08-25-2015, 06:57 PM   #22
Senior Member
Join Date: Aug 2012
Location: Noblesville, IN
Posts: 324
If the frame is showing a lot of rust trade it. Once the frame starts to weaken doors won't close, leveling will be a challenge etc. Many problems you can't solve. Don't fall in love with these things.

2005 Country Coach 40 foot Inspire 330
HoleInOne is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ugly Fix Performance Module Detroit Diesel SSRice Monaco Owner's Forum 1 10-16-2014 06:29 AM
Slide cover rust docsdock Class A Motorhome Discussions 1 09-15-2014 03:43 PM
Cheap Handling Fix rwp48 Winnebago Industries Owner's Forum 3 05-03-2014 07:47 AM
Trade or not to trade? monkiewicz New Member Check-In 13 11-29-2013 02:21 PM
Trade in of tow vehicle. Leave base plate or replace with bumper? ctcamper Toads and Motorhome Related Towing 14 08-06-2013 06:58 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:17 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.