hundreds of tiny rust spots !!

[5toClean]

I pulled the Monte Carlo out of the garage today (winter storage) and when I got it out in the sunlight I was horrified to find hundreds of tiny rust spots all over the hood and front fenders. This paint is just a little over a year old and is 2004 Corvette bright white in Duponts Chroma One with a clearcoat.

As near as I could tell the spots were the result of metal particles from grinding getting on the car while it was out of the garage for a couple of weeks while I put a new engine in the Jeep. I washed the car then hit it with a clay bar and was able to get all the spots off and it does not appear that there was any damage to the paint, but this left me with two questions.

1) How much does the type of paint come into play when determining a detailing regimen? The Chroma One is a catalyzed paint and seems to be very hard which makes me think that it will take more aggresive chemicals to condition it. Any thoughts?

2) Does anyone have opinions on a good car cover?

[togwt]

Corrosion:

Corrosion (rust) destroys metal by an electro-chemical reaction with water as the catalyst (water + ozone (an oxidizer) moisture + oxygen). Corrosion arresting products are available that penetrate corrosion cells, emulsify the moisture and separates it from the metal leaving an ultra-thin barrier to protect the metal from further damage.



It is not enough to simply seal over existing corrosion by moisture displacement. While this technique will prevent further contact with the electrolyte, (moisture), it also traps existing moisture under the sealant, thus allowing that corrosion to continue.



Corrosion arresting products, when applied to a moist surface, will wick the moisture through the coating to the surface. A major study on rust proofing 2-3 years ago stated that an annually applied petroleum based product offered the best protection. Rubber coating such as Ziebart were not recommended as water or moisture can be entrapped between the rubber coating and the sheet metal making matters worse and also the best time to apply the product is in the summer months contrary to the cooler fall months, this way the product remains liquid and will penetrate folds and crannies.



The cause-

Particles produced from the friction of brake pads rubbing against the rotor.



This metal on metal friction disperses tiny particles of statically charged black dust, which adheres to the wheel and other vehicle surfaces. Sequestered brake dust, if left for any length of time will cause galvanic corrosion, which etches the paint surface allowing contaminants like acid rain, ozone, sulphuric acid, dioxide and nitric acids to penetrate the paint film surface.



Once the clear coat is compromised UV radiation will further degrade the paint by causing oxidation. The metallic brake dust acts as a conduit for industrial contaminants to permeate the paint film surface, that over time can cause permanent etching which, take the contaminants harmful effects (corrosion) right to the base of the paint system and down to the vehicles sheet metal.



Neutralizing â€â€œ

Washing the paint film surface with a slightly alkaline car wash concentrate and thoroughly rinsing will neutralize the contaminants and remove them from the paints surface Detailer`s clay removes imbedded brake dust and other contaminants by encapsulation, thereby eliminating the primary cause



Treatment-

By applying a suitable cleaner (Por-15® Products Marine Clean) and then a rust inhibitor (POR-15® Products) it will arrest corrosion on contact without leaving a sticky residue that would attract dirt, dust or grime. Corrosion attacks metal by an electrochemical (galvanic) reaction with water as the catalyst.



It penetrates the corrosion cells, emulsifying the moisture and separating it from the metal, leaving an ultra-thin barrier to protect from further damage. Since most corrosion begins in crevices, (seams), it is important to have the capability to penetrate these crevices in order to form a protective barrier. Many heavier or more viscous products don`t penetrate crevices, instead they form a `bridge`, and while this may isolate the crevice from further contact with the electrolyte it does nothing to eliminate the presence of existing moisture or surface corrosion. Injection into a seam or crevice with an aerosol or spray eliminates this problem.

JonM

[Accumulator]

Originally posted by 5toClean

I [found] hundreds of tiny rust spots all over the hood and front fenders. ...I washed the car then hit it with a clay bar and was able to get all the spots off and it does not appear that there was any damage to the paint..

If the rust spots come back you might oughta use a decontamination system (AutoInt`s ABC or the stuff from FinishKare).

1) How much does the type of paint come into play when determining a detailing regimen? The Chroma One is a catalyzed paint and seems to be very hard which makes me think that it will take more aggresive chemicals to condition it. Any thoughts?

2) Does anyone have opinions on a good car cover?

Can`t help with the cover, but yeah, the type of paint can make a difference. The harder the paint the more aggressive your abrasives have to be. This can even factor into which machines you use (Cyclo instead of PC, for instance). But other can removing marring, it won`t make any difference when it comes to detailing. You *might* get away with a little more when you`re washing, but generally, hard paint seems to mar about as easily as "regular" paint, it`s just harder to correct.

[Jngrbrdman]

If what you are talking about looks like that then all you need to do is clay the car and that will pull the particles out that are causing it. Then use a good paint cleaner or polish to clean up the rest of the dots and you are done. This is from my site on how to deal with clay:

That is the back of a 1998 Chevy van. Those little dots arenâ€â„¢t spray from a splattered catsup pack. They arenâ€â„¢t bug guts. Those are little dots from particles of metal that have embedded themselves in the paint and rusted. That is the way that many vehicles end up looking if they arenâ€â„¢t careful. In fact, if you look at the back of your own car along the bumper or across the trunk you may see similar dots. This article is going to explain what those dots are and how to get rid of them.



The orange or brown dots that most white car owners see and many other car colors simply hide is called Industrial Fallout (IFO) and is also known as Rail Dust. IFO occurs when particles from the atmosphere land on an unprotected car surface and then embed themselves in the paint. Typically this kind of thing is caused by brake dust if you do a lot of freeway driving. Hot brake dust coming off your brakes and the brakes of other drivers will land on your paint and melt right into the car much quicker than other forms. Rail dust is similar. Rail dust is named such because it is commonly found on cars that are transported by rail. Metal shavings from the rails fly up and melt into the car the same way brake dust does. It is protection from these kinds of IFO that cars are shipped with those protective plastic sheets on the hood and side mirrors and other parts of the car.



IFO literally falls out of the sky. If you live in an industrial area then you are going to see more of this problem than if you lived in the country. Living near refinerys like I do puts me at greater risk of IFO than the average Joe. Compound the fact that I have to do some freeway driving and I live a stone throw away from the freeway makes me even more at risk. Pollution from these areas will collect in the atmosphere and just land where it falls. Usually that is going to be on cars parked and not doing anything.



The only way to 100% protect yourself from IFO is to never drive your car and keep a car cover on it. That not being an option for most of us, the other alternative is to protect the car in other ways. Keeping it washed is the first good way to prevent it. In the winter IFO is even worse than in the summer. All that brake dust and pollution that doesn`t land on your car right away is quickly deposited there in the form of slush and road spray. Ever notice how bad your car looks in the winter as compared to the summer? People go longer between washes because it just gets dirty again. That is not a good excuse. The same argument could me made for washing your dishes or cleaning anything else. What`s the point in brushing your teeth? They are just going to get dirty again. You need to keep your car washed weekly if possible. In the winter when it is hard to get out there and do it then you need to at least take it to a drive through car wash or something. The paint on your car is the most expensive part of the vehicle. Even more expensive than the engine or anything else. It is also the most visible part of your car. If you ever plan on selling the car someday then you need to take care of the paint. That will be its best selling point when the time comes. Don`t let your lack of washing it cost you hundreds or thousands of dollars on the resale value.



Another good way to protect your car from IFO is to use a high quality sealant on the surface. Waxes are great and everything, but they are merely for looks. Waxes won`t protect you from IFO for very long. Imagine dipping your finger in a candle that has just been blown out. I remember playing with wax when I was a kid and I would do this all the time. The wax coats your finger and creates sort of a shell around it. If you bend your finger and then straighten it back out again, then you might notice that it isn`t a skin tight shell anymore. The more you wiggle your finger the shell gets looser and looser. That is how wax works on your car. It creates a `shell` around the paint that is temporary protection. In the heat your car will shrink a bit. When it gets cold it will expand. This shrinking and expanding will create space between the paint and the wax. Heat builds up in that space and will speed up the process of the breakdown of the wax. Even the best wax will only last around 6 weeks on your car before there are large areas of wax that have basically `melted` away. Harsh weather like heavy rain or snow will wear down the wax as well. Using really strong soaps to wash the car will wear it down too. Wax is very oily, so using an oil cutting wash will pretty much remove all the wax. Dish soap is a very good example of this.



A car sealant is more like dipping your finger in super glue rather than wax. Super glue bonds to your skin right away. It will shrink and expand with your finger instead of pulling away. In fact, to remove the super glue you may need to use an abrasive pad or some other strong chemical. Sealants bond to your car in the same way. They bond on the molecular level. First the molecules bond to each other and then they bond to the paint. This creates a very strong barrier of protection that can last for many months. Some can last for 6 months or longer. Sealants are very good protection for your paint. There are many different kinds of sealants that provide a variety of appearances. Most are very glossy and shiny. The latest technology of sealants adds a depth and a `wet look` that has always been the best quality of waxes and glazes. Now you can get the appearance of a wax and the durability of a sealant.



The best part about a sealant is that it will protect your car from UV rays that will fade the car and oxidize it. It will also create a much slicker surface that IFO finds much harder to penetrate. If you have a good sealant on the car then IFO may land on the car, but it won`t be able to work its way into the paint quite as easily. It will wash off instead of needing other treatments. If you live in a higher risk area for IFO damage then it is important for you to wash your car frequently and use a good sealant.



Now comes the part where we deal with removing the little brown dots. The reason they are brown is because most IFO is actually metal shavings and they rust when they get stuck in there. The brown stain is the rust that spreads from the little piece of metal. The rust stain can be cleaned off easily enough with a paint cleaner or a polish. That won`t remove the metal shaving though. It will still be there. With enough of those metal shavings in your paint you could cause serious and irreversible damage to your paint that will eventually result in total clear coat failure. You have seen it before I`m sure. Cars that look like the hood needs to be repainted are cars that were badly taken care of to begin with. I`ve seen 15 year old cars looking better than 5 year old cars and it is all a result of proper car care on a regular basis.



The most common way to remove the IFO is to use a product called `clay`. I`m not talking about molding clay or earthy clay. This is a specifically designed for automobiles kind of clay. Clay Magic is the brand that I would suggest. You will find other brands on the shelf from companies like Mother`s or Meguiar`s, but Clay Magic is the brand that I like the best. I like it best for a number of reasons. Number one is the way that it sticks to your fingers while working with it. Some clay is just too hard and slips out of your hand too much. If you drop a clay bar on the floor then it is going to pick up little pieces of grit that are going to do damage to your car. A dropped piece of clay is a lost cause and should be thrown away for safety. Clay Magic is sticky and I very very rarely have one slip out of my hand while working with it.



CLAY



The way you use clay is very simple. You wash the car and rinse it like normal. Dry it as you usually would, but leave a little water here and there to help in lubricating the clay. Clay Magic usually comes in a kit that includes a bottle of spray lubricant. Using that with the extra water on the surface will make the job much easier.



Clay usually comes in a 100g sized bar. You can break that into three or four pieces very easily. Break off a chunk and begin with that. If you drop it then at least you didn`t just throw away an entire bar of clay. One clay bar is good to clay probably half a dozen cars or more. You shouldn`t need to worry about replacing this bar often. You won`t really have to use it that often.



Using the spray lube provided with the kit, spray some lube on the surface of the car. I like to start with the front of the car on the hood or the fenders. Don`t go too heavy with the lube. Just a spritz is really all you need. Then going in back and forth motions in the direction that the air blows over the car while driving, go about 10 or 12 inches at a time. Just rub it back and forth along the surface until you have covered the whole car. Do not use clay in circular motions. Go in straight lines from front to back. Don`t go up and down or in circles. There is no need to wipe down the area after you are done either. Usually I just pull the car back out of the garage and wash it again when I`m done. That is actually the easiest way to do it.



Claying your whole car should take about an hour. Once you get good at it then it is possible to cut that down to 20 or 30 minutes. Its not a very hard job to do and the difference after claying is amazing. You will notice that the surface is noticeably smoother and has more shine. As you are claying you will feel that the surface grabs at the clay at first and then allows the clay to glide after a couple of passes. That is how you know the clay is working. It isn`t rocket science at all. I am amazed everytime I explain the principle of clay to someone that they have never heard of it before. This is the easiest way to work by hand and actually repair damage and prevent future damage on your car.



After claying your car you can follow it up with whatever paint cleaner or polish you normally use. While clay will remove many of the black and brown dots that are caused by IFO, it may not remove them all. Using a good paint cleaner or polish will clean off the rest of the stains. The metal shavings are gone and all that remains is the stain. That should be easy to clean up as preparation for a sealant or a wax.



The only risk involved with clay is that you may pick up some grit in the clay and it could act as an abrasive on the car causing scratches. To avoid that, you should fold the clay often and inspect your work and the clay frequently. If you feel rough particles in the clay then you should try to either get them out of the clay or get a new piece. Folding only helps so much. If you have lots of gritty particles in the clay then its time for a new piece. Its not worth the scratches you could cause in the car if you choose to ignore the particles. Clay is cheap at a price of only about 10 bucks. Your paint is worth buying a new bar if you have run out instead of using a piece that is gritty and could cause damage.



To store your clay you should either choose a zip loc bag or some other kind of container that will protect it from dirt. 200 gram sized bars of clay usually come in their own box. I store my clay in an empty wax jar. Choose whatever works best for you. Protect the clay from dirt and it will be there to protect your car from IFO for a long time.



You should only really need to clay twice a year. I clay in the spring to clean up from the winter and then I do it again in the fall as I prepare the car for the winter. Unless you notice the orange dots coming back then you shouldn`t need to clay more than that. The most common place for IFO to appear is the back bumper and trunk. That is where your own exhaust deposits pollution and the wind blows your own brake dust behind you. Those areas may need to be clayed more often. Follow clay with the sealant or wax you normally use.



Well, that may seem like a lot of work, but it really isn`t. This article is mostly informative rather than actual instructions. To summarize what is written, these are the steps you should follow:



-Wash the entire car with the car wash of your choice. You may leave a bit of water on the surface when drying to assist in the lubrication of the clay. To clay you just lubricate the surface with either a soap and water mixture in a spray bottle or with the lube included with the clay kit and glide the clay along the surface. Do not use circular motions. Rub the clay on the paint in straight lines from back to front in the direction the wind blows over the car while driving. The clay will grab at first and then glide with ease when the surface is clean. Do not drop the clay. Inspect it often for grit or other particles that could scratch. Clay the whole vehicle and then rewash the car. Apply a paint cleaner or polish to remove the remaining brown dots and then seal or wax.-



That is as much as I think I can say about how to handle those annoying dots that appear on your car. Don`t just polish the car and be satisfied that the brown dots are gone. Protect the car properly with a sealant and remove the IFO with clay. That way the dots won`t come back unless more IFO penetrates the sealant. Keep an eye on your car and care for it well and your paint should please you for many years.

[5toClean]

Thanks for the replies everyone, quite enlightening. Let me clarify a point though, I am 100% sure that the rust spots were the result of fallout from work I was doing in and around the garage involving a grinder and the new posi rear end sitting on a pair of jackstands (airborne metal particles). I did have to pull the4 car out of the garage for a few days during this work where the car got covered in dew (moisture).

Airborne metal particles + moisture = rust spots. I clayed the car and it cleaned up fine and there does not appear to be any other paint damage.

But there are several lessons learned from this;

1) Metal grinding anywhere near the car in the future is a no-no!

2) The Chroma One paint is a very hard finish. I can use my rotary on it (I am proficient with a rotary having used them for over 20 years) but would like to avoid the rotary and wonder whether a PC would be sufficient for this type of paint?

3) A good car cover is going to be well worth the expense, but I would like to hear of anyone`s opinion on a good, breathable, non marking cover.

As a side note, this car is garaged almost 8 months out of the year, it doesnt see rain or winters here in NY.