Early rust prevention

[Dieselcamino]

Hey Everyone, just picked up a 2018 Silverado with just under 20k, being in New England where rust is the ultimate killer of cars and trucks I'm looking for any kind of extra rust protection.  I've learned that there is a wax like factory undercoating that is sensitive to some products (no fluid film)

 Anyone have a prevention method?

 Good products to use?

 Any sweet spots to hit, wheel wells, cab corners?

 

Anyone every try cosmoline on the waxy coating for a touchup?

[HoosierZ]

Since most body panels rust from the inside out, look into using a cavity wax inside the doors, rockers, cab corners, fenders, and tailgate. I used a product called Noxudol 700 on my 2016 but there are several other brands of cavity waxes. 
 

Last fall, I hit any rusty spots on the frame with rust reformer. I coated the inside of the frame with transmission fluid to try to prevent the frame from rusting from the inside. 
 

Every spring, I pull out the fender liners and the plugs in the rocker panels and flush out the salt and hit a few spots in the wheel wells with more cavity wax. 

[Dieselcamino]

Summer flew right by, but now is prep time for salt season. Spoke with two local companies who offer services for rust proofing. Fluid film and NH oil undercoating, neither would touch it because of the factory wax undercoating (I appreciated their honesty) 

 

Think I'm going to pick up a few cans of the Daubert Chemical NoxRust X121B which I believe to be the factory coating.  Any suggestions on if I should spray down up into body panels or not? Specifically inside the wheel wells and can corners? (Obviously after a good cleaning and drying first) 

[Black02Silverado]

I have a few customers that really like AMSOIL's HD Metal Protector.  It will not effect the factory coating and dries to a wax like film.  If you are interested let me know.  I can get you a quote.

 

Edited October 4, 2021 by Black02Silverado

[Z45]

HD Metal Protector is a long term backorder

 

Quote

Sorry, this item is temporarily out of stock due to high demand and supply-chain disruptions. Check back soon for updates.

 

[Dieselcamino]

Anyone have any experience using the HD metal protector or the noxrust? What kind of spray pattern do they have, similar to underbody coating? Would the spray be able to reach into the inner wheel wells if one were to take the taillights out?

[Black02Silverado]

On 10/4/2021 at 12:16 PM, elcamino said:

HD Metal Protector is a long term backorder

 

 

Not good.  Just like the oil filters.  Hopefully things will turn around soon, but not looking good.  I wonder if all those cargo ships off the coast of CA. will help?

[Andre LaVoie]

2015 GMC 2500 Base/WT Crew Cab

I just bought this last month.  It came from NV and absolutely rust free. Being in Michigan I knew it needed rust proofing immediately. I decided to go with Krown rust proofing. It is the oil.  They spray the underbody as well as cavities  throughout the truck. After researching it seemed like the best option available to me. $150 per year. I thought of doing Ziebart, but with its initial cost and yearly touch ups it would take 8 years of Krown applications to equal the same cost. The way I attract deer I doubt I make it that far. 

Also, I live on dirt roads and it seemed some of the other products don't hold up to gravel.

One thing I made sure I did is put my new step bars on before I took it to get sprayed. They sprayed them too to keep them rust free. 

[Dieselcamino]

I would like to do crown as it seems that is the only commercially done undercoating that doesn't destroy the factory wax coating but my nearest location in over 4 hours away. 

[Doublebase]

I used fluid film for two years on my 2018, never an issue with the factory wax. In fact i  think it was the only thing keeping it supple and preventing it from drying out. I find that's the biggest issue with that frame wax, it dries out then falls right off.