Rust Inhibitors - fact or fiction? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 11 (permalink) Old 11-04-2006, 11:46 AM Thread Starter
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Question Rust Inhibitors - fact or fiction?

I am already starting to see small spots or rust in the welds on my baby...that just won't do!

I need to do something about the spots that are already there, but I am also wondering about what to do to prevent them. My wife had one of those aftermarket Electro Rust Inhibitors installed on one of her cars from the factory, and she drove that car forever and never saw rust...and that was a Toyota!
My neighbor has one on one of his cars and he hasn't seen any spots forming anywhere either, his car is close to 10 years old.

I am wondering if anyone knows anything about this. I am thinking of getting one of these things, but I don't want to waste around $100 for a Placebo effect.

Plus, does anyone have any sound advice for repairing/stopping the spots that have already formed? All the body shops around here no longer do any rust repair, so I'm left doing it myself.
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post #2 of 11 (permalink) Old 11-04-2006, 11:54 AM
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I heard from a bunch of mechanics who have done studies they are bs. Its suppose to stop the water from sitting there. I just get mine rust proofed each year. Never see rust on my vision before it got totalled and it was 14yrs old and driven in canadian winters every year.
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post #3 of 11 (permalink) Old 11-04-2006, 12:27 PM
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Rust converter turns rust into a paintable primer. The only way to really stop rust is to prevent water and oxygen from getting to the actual metal, and a couple of coats of paint can generally stop what has begun. Converter, then rustoleum. If it works on my outside BBQ grille, it should work on the belly of your car.
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post #4 of 11 (permalink) Old 11-05-2006, 12:00 AM
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rustproof every year... i started this year LOL..... i think its the best security.

Good luck
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post #5 of 11 (permalink) Old 11-05-2006, 12:32 AM
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I have heard both good and bad on those. Need someone from the "rust belt" that has had one for awhile to get an accurate idea.
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post #6 of 11 (permalink) Old 11-05-2006, 12:47 AM
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I have one that looks like it came from the factory, and my engine seems pretty rust-free (except the exhaust). I haven't really seen any first-gen engine bays up close without one to compare it to, though.
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post #7 of 11 (permalink) Old 11-05-2006, 08:53 AM
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Rust protection every year is the best bet, I've heard some good things about the "electrical" systems but they're in the minority right now.
Thing is, you can only slow rust down, it can't be stopped.
painting over rust doesn't work either, all paint breaths and will allow oxygen to get to the steel if it's rusty. Rust must be removed in order to give the steel a chance to live.
A good penetrating rust preventative coating, properly applied, is probably your best bet.


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post #8 of 11 (permalink) Old 11-05-2006, 02:50 PM
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what about if u put some thick, greese on the rust were its starting
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post #9 of 11 (permalink) Old 11-06-2006, 06:19 AM
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I oil spray every year.

It definately helps but you must be aware, they will all rust someplace eventually.

Had a 1973 Dodge truck from California. It was oil sprayed every year in was in Ontario. Some rust did form but in defense to oil spray, it formed in places that were missed. Over rear wheel wells and the roof's drip rail.

The LHS has the same problem. It's virtually rust free from oil spraying anually but we are getting some bubbles forming around the windshield and it was never sprayed in that area.
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post #10 of 11 (permalink) Old 11-06-2006, 09:10 AM
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I have one of the electronic ones on my 06 Civic. Give me about 5 years and I ;'ll get back to you.
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post #11 of 11 (permalink) Old 11-07-2006, 12:29 AM
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The electric rust prevention is a proven method, commonly used on a large scale in the oilfield and industry. It's properly Called Cathodic Protection. (More info on rust in general)

A Great artical explaining the process

There are several other methods available to control corrosion and prevent the formation of rust, colloquially termed rustproofing. Cathodic protection makes the iron a cathode in a battery formed whenever water contacts the iron and also a sacrificial anode made from something with a more negative electrode potential, commonly zinc or magnesium. The electrode itself doesn't react in water, but only to provide electrons to prevent the iron rusting.
Cathodic works very well in these other uses so I don't see why it wouldn't protect your car the same way. I may try one of these also soon if the price is right.

Last edited by DJDiggler; 11-07-2006 at 12:35 AM.
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