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TundraGeneral discussion forum for the 2007 and later Toyota Tundra.
This is a discussion thread titled "Winter + Road Salt = Rust", within the Tundra forum, part of the Truck Forums category.
I'm sure that someone will try to explain that the corrosion process is a bit more complicated than that. I am considering having a rust control module installed on my Tundra. Does anyone have any experience with these gadgets? Do they really work?
And no, moving somewhere warmer or where they don't use salt isn't an option .
Ive never actually used anything like this but i know on large ships (and other objects sitting in water for long times) people use a peice of other metal like zinc that rusts faster to prevent rust on the structure that actually matters. You could possibly try something like this on your truck
I have put some thought into this... but I am by no means an expert. Here are my thoughts:
In an electrochemical reduction reaction (ie. corrosion or rusting) the anode is what corrodes, and is consumed. Generally, this is the steel portion of the body and frame on your truck.
A rust control module is a form of Cathodic Protection (CP); this takes what is usually the anode (rusts), and makes it the cathode (doesn't rust). There are basically 2 different types of CP: using a sacrificial anode (usually zinc, as on outboard motors and other marine applications); and impressed current CP (usually used on things such as oil pipelines), which is what we are talking about here.
The key to all of this is that SOMETHING has to corrode. On an outboard motor, its the little block of zinc thats attached to the submerged portion of the leg. When using impressed current CP on things like oil pipelines, anodes are usually driven into the ground. The module is connected to the pipes and the anode rods in the ground, and the electric potential generated by the module makes the anodes in the ground corrode preferentially, thus saving the steel pipes. Another key here is that the anodes have to be changed out somewhat regularly, as they are consumed by the reduction (rusting) reaction.
So, when you put the module in your truck... what corrodes? Good question. I haven't been able to figure that out. If this were to actually work, there would have to be an anode hidden in that module somewhere, and that makes the anode mighty small... perhaps useless.
A second problem with using such a device on a non-uniform shape (like a truck, not an oil pipeline) is that the nooks and crannies on the body can create eddy currents and can actually make the steel on the TRUCK preferentially corrode. So you can actually accelerate the rusting process by putting one of these on your vehicle.
In my opinion, save yourself the $350 (or whatever) and spend it on washing your truck during the winter months.
Ive never actually used anything like this but i know on large ships (and other objects sitting in water for long times) people use a peice of other metal like zinc that rusts faster to prevent rust on the structure that actually matters. You could possibly try something like this on your truck
Zinc doesn't rust faster, so I don't see what that would do. Zinc is covering steel to produce galvanized. It then sacrifices itself to protect the steel, but it doesn't "rust" in the common sense of the word as you would be looking for on a car.
__________________ Crewmax Salsa Red Pearl Loaded.
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The sh!t they spray on the roads here Idaho is the reason why I do not put any extra chrome on my trucks anymore. One winter of that crap on your chrome and you can pretty much junk it.
what about undercoating, i just had my tundra done a week ago. i am a technician and those gadgets with the 2 lights on under the hood, and by looking at the underside of them, i dont think they do ****. i live in upstate ny where they live to spray that salt **** everywhere. go undercoating, just makesure that they dont spray eveything,(exhaust trans, etc...) frame and rails rearend, front control arms and leaf springs. and if there is a place by u called ziebart, dont go there!!!!!!
what about undercoating, i just had my tundra done a week ago. i am a technician and those gadgets with the 2 lights on under the hood, and by looking at the underside of them, i dont think they do ****. i live in upstate ny where they live to spray that salt **** everywhere. go undercoating, just makesure that they dont spray eveything,(exhaust trans, etc...) frame and rails rearend, front control arms and leaf springs. and if there is a place by u called ziebart, dont go there!!!!!!
yup thats what i did in my truck, very good protection.
I think you would be better off getting the truck rust coated every year, there are some pretty good drip less oil sprays out there.
As for Ziebart, or any of the other "permanent" types of protection, I don't think they are worth it. If there is any type of crack in that protection (which does happen), the salt and moisture gets up there, next thing you know its peeling off and underneath is a ton of rust.
Oil it every year, I'm sure you can find a place to do it for less than $100.00.
__________________ The Tundra is a good single guy's truck. Its pretty, it doesn't rattle too much and its fast. Now I just need to find a woman who matches in all those respects.
If you are in Canada, look up your nearest Krown rust control place. They have an oil-like product that is incredible. My 1998 Accord was done, and it has no rust. My parents have a 1994 Corolla that has been in Toronto and Calgary its whole life, and not a spot of rust on it. If I lived in Canada, I would have it done. I wish they had it here, and I live in the sunbelt.
__________________
2007 Tundra DC TRD 4x4
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I hate to burst everone's bubble but most after market spray on's are useless. The factory takes many precautions to fight corrosion, it's part of the reason you have a 5 or 6 year warranty against corrosion. Trust me, if spraying on a thin liner prevented corrision, most manufacturers would just do it. Most liners, don't even last longer than 6 months.
Save yourself the money, go to Esso, and just make sure you get the underbody wash, you'll be fine.
We did get a lot of salt spray where I lived in FL. My Mazda was treated (by the dealer) when we got it in 93, they even sprayed under the bedliner. When I traded it for the Tundra last Spring, there was no rust on the body and just surface rust on the frame and underpinnings. I rarely ever washed that truck after it was 5 years old.
The night before I traded it in, my neighbor and I removed the bed and swapped gas tanks. His Ranger had a cracked tank, and I had a relatively new tank because I replaced it due to a crack.
BTW: The crack was in the same place on both trucks.
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Winter + Road Salt = Rust
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Crewmax Salsa Red Pearl Loaded. 
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