Dan
Well-known member
Curious about what cars you guys think rust the fastest. In my experience it is Toyotas. The big 3 also seem to be rust prone. Zee Germans seem to have the hang of things as far as prevention, Swedes as well.
Rust buckets...
- Thread starter Dan
- Start date
Ron Ketcham
Active member
The Germans, the Swedes still fog an anti rust wax into the cavatities, which is what the ValuGard Rust Inhibitor is, and is private labeled for Ford for use in body repairs and Chrysler as well. Plus, Chrysler markets it as an after sale under the name of Master Shield.
NOTE- This not "UNDERCOATING", but an ASTM tested and approved, wax based product that must be "fogged" into all the cavatities of a vehicle. To do a complete vehicle, a special application gun is required. For small repairs, it is available in an aerosol can.
NOTE- This not "UNDERCOATING", but an ASTM tested and approved, wax based product that must be "fogged" into all the cavatities of a vehicle. To do a complete vehicle, a special application gun is required. For small repairs, it is available in an aerosol can.
Dan
Well-known member
I thought the big thing with the German cars were that most have fully galvanized bodies as well?
Accumulator
Well-known member
Cheap oriental vehicles....e.g., Mazdas like my MPV.
I found it much tougher to get the proper application with the can, compared to the spray gun (cheapie gun too, the one you suggested would be good enough). And as you know, if the application isn't just right you can cause more harm than good. The spray cans tend to "spray" instead of "fog" and that makes it tricky...at least for me.
Ron Ketcham said:
I found it much tougher to get the proper application with the can, compared to the spray gun (cheapie gun too, the one you suggested would be good enough). And as you know, if the application isn't just right you can cause more harm than good. The spray cans tend to "spray" instead of "fog" and that makes it tricky...at least for me.
Ron Ketcham
Active member
Nope, ever try to weld or paint galvanized metal?
Dan
Well-known member
Ron, I think we are both right:
Galvanized Body < Technical Glossary < Help < Volkswagen Canada
"Effective protection against corrosion raises the resale value of a car. The prerequisite for this protection is a flawless multi-layer paint system. Furthermore, in addition to the use of fully galvanized sheet steel, Volkswagen vehicle bodies are subjected to solid wax flooding of body cavity areas which are at risk of being exposed to moisture. For technical reasons, it is not possible to fully galvanize ultra-high-strength steel. Volkswagen offers a 12-year warranty against rust perforation for all models."
Galvanized Body < Technical Glossary < Help < Volkswagen Canada
"Effective protection against corrosion raises the resale value of a car. The prerequisite for this protection is a flawless multi-layer paint system. Furthermore, in addition to the use of fully galvanized sheet steel, Volkswagen vehicle bodies are subjected to solid wax flooding of body cavity areas which are at risk of being exposed to moisture. For technical reasons, it is not possible to fully galvanize ultra-high-strength steel. Volkswagen offers a 12-year warranty against rust perforation for all models."
Ron Ketcham
Active member
Very little is actually used, it's more of a marketing thing. The companies went to e-coat in the early 80's, thinking it would stop all the rusting, and most stopped applying the cavatity wax as a result. (application of the anti rust wax product is a seperate step and many companies believed the ecoat would get their vehicles through the warranty period)
Didn't work so well, as where ever there is a hem flange, a "seam", the ecoat and primers will flex and break, creating a hair line crack. Once that happens, the corrosives creep in and under the ecoat and start corroding (rusting). Which is why so often the first "rusting" that shows is at the bottom of doors, the lower seam on a trunk lid, the flange/seam on a pickup tail gate.
The ASTM cavatity wax stays flexable for years, and "seeks out" bare metal, and pushes any moisture away from the exposed metal, coating it with it's self.
Undercoating does not do that, and many are just some liquified asphalt that get's hard over time,(rubberized is even worse for promoting corrosion) is not applied into the vehicle's cavatities, and will "crack", and do what is called, "pocketing'.
This is when it cracks due to age, it opens up and corrosives, moisture enter and eat under the undercoating, making a breeding ground for corrosion.
The one ValuGard provides does not "pocket" and contains a percentage of the cavatity anti corrosion wax in it.
Another issue with "assembly" of a body, is that wherever the robots make a weld, the chemistry of the metal is changed, making it more corrosion prone. The ecoat helps reduce that problem, until the "weld" area starts to flex with age, then the ecoat cracks and rust starts.
Just a little "primer" on corrosion and such so everyone can make intelligent decisions in caring for the vehicle.
Didn't work so well, as where ever there is a hem flange, a "seam", the ecoat and primers will flex and break, creating a hair line crack. Once that happens, the corrosives creep in and under the ecoat and start corroding (rusting). Which is why so often the first "rusting" that shows is at the bottom of doors, the lower seam on a trunk lid, the flange/seam on a pickup tail gate.
The ASTM cavatity wax stays flexable for years, and "seeks out" bare metal, and pushes any moisture away from the exposed metal, coating it with it's self.
Undercoating does not do that, and many are just some liquified asphalt that get's hard over time,(rubberized is even worse for promoting corrosion) is not applied into the vehicle's cavatities, and will "crack", and do what is called, "pocketing'.
This is when it cracks due to age, it opens up and corrosives, moisture enter and eat under the undercoating, making a breeding ground for corrosion.
The one ValuGard provides does not "pocket" and contains a percentage of the cavatity anti corrosion wax in it.
Another issue with "assembly" of a body, is that wherever the robots make a weld, the chemistry of the metal is changed, making it more corrosion prone. The ecoat helps reduce that problem, until the "weld" area starts to flex with age, then the ecoat cracks and rust starts.
Just a little "primer" on corrosion and such so everyone can make intelligent decisions in caring for the vehicle.