Originally Posted by PeriodCorrect

Thanks for the video. I'm going in to KROWN to have their oil sprayed in the body crevices as well as the frame- Do you know if their oil is potentially flammable as well? They do this throughout the country and canada, so I'm guessing they've done their homework, but I thought I'd get your opinion.

Originally Posted by JD101b

Krown is GARBAGE. Worthless product that won’t last you a single winter.

Im not sure if it’s conductive or not though I’ve never heard of a car fire starting from Krown, but the product itself is trash.

NHoil is pretty good, but you may have to learn to do it yourself because most services don’t use really good anti rust products.

Originally Posted by PeriodCorrect

OK- How about valugard (a linex product)? It’s thick and I have a local service provider who can spray it.

Originally Posted by Surge

Door hinges: Mercedes recommends Wurth grease in a spray can. Something lighter will just wash away.

Originally Posted by PeriodCorrect

Can I ask what your experience with Krown was? I am only seeing people praise them online, but would value your input here. DIY isn't an option as I don't have the space for it, or the time, unfortunately.

I'm either between Valugard, Krown, or potentially Fluid Film as there is another outfit that does that. The issue I hear fluid film has is that it can cause rubber to swell. I don't want to induce any leaks in any of my drivetrain components. Krown told me they liberally spray everything rubber with silicone before applying their oil undercoating.

Originally Posted by JD101b

Krown just doesn’t last. Washes off quickly. Fluid Film is okay, but miles ahead of Krown.

Originally Posted by PeriodCorrect

Is fluid film safe to spray inside door panels etc? Thanks for your patience in answering these questions.

Originally Posted by JD101b

I've posted before on my 2010 G-550...55k miles, very well taken care of, and rust bubbles forming under the front windscreen, around the rear door hinges and along the side door sills.

I'm going back and forth with Mercedes to see if I can get them to correct these issues. Even if they do, I still need to figure out long term preventative strategies to prevent this from happening again. So far, they include lubricating all hinges with LPS on a weekly basis and running a dehumidifier in my garage, along with using fans to dry out the undercarriage, but I'm not sure how to go about protecting the chassis, or rust proofing hard to reach areas (i.e. the underside of the doorsills or the metal directly below the front windscreen.

Does anyone have experience in rust restoration/prevention? What are my options?

Originally Posted by azpaquin

Right Side bottom sill

Left side bottom sill.


I am having some problems myself.

Originally Posted by JSwan724

SUGGESTION:

In the interest of helping older model G Wagon members better understand where the rust issues are and what Mercedes has done to correct them I propose we use pictures of the new 2019 and 2020 models as a comparison.

For example;

1. WINDSHIELD - The new models no longer have a rubber seal to hold the windshield in. So water that was being trapped under the rubber seal is eliminated.
2. As Surge pointed out, it seems that there are zinc coated bolts, hinges and spacers between the body and the actual hinge on the rear door hinges along with a waterproof grease on the pins.
3. DOOR AND REAR HATCH HINGES - Having read all of the posts here I am thinking that the rubber boots around the door hinges and wiring harnesses are water retainers on all models new and old.
4. SIDE WINDOW RUBBER SEALS - Another potential rust area. If you pay careful attention you will see water running out from under these seals after a rain or wash as you dry the car. so determing where it is entering will help develop a rust preventative solution.
5. MB SERVICE AND INSPECTION - I think checking with your MB dealer mechanic or service writer would be a great source to obtain blank copies of the periodiic inspection reports and check lists that MB technicians use on G Wagons in for service.

To be sure, MB uses customer service and complaint feedback to continuously build a better mouse trap in the new models. So we have an opportunity to learn what they already know and what ther correction processes are for these issues.

I have a 2020 G63 Wagon and would be willing to take pictures of various areas to be used for comparison purposes to aid in developing solutions.

Regards
Jerry

Originally Posted by farmdog

I talked to an MB body shop manager and he said the G windshield seals are not structural, meaning they do not hold the windshield in. The windshield is held in purely by the glass adhesive used during installation. The seals are just there to fill the gap between the glass and the body, and prevent water from getting in there. Obviously the seals do not work for that purpose. If you ever drive in rain, the force of the wind pushes water past the seals. The design is the failure.

I was considering cutting out my windshield seal and filling in the gap with a ton of RTV, to truly seal out water, but when I looked under the seal I discovered a tiny paint bubble... so the rust has already started. Too late.

I've decided to not stress and just enjoy the vehicle and drive the hell out of it. In 10 years it will rust out and I'll either have a large repair bill to replace the windshield frame or I'll sell it for a pittance and move on. Or who knows maybe next year I'll total it or even die of a stroke and none of this even matters. There are 24 hours in each a day and I don't plan to spend even a minute more worrying about it. I love my G, it was my dream car for 10 years and now I finally have it. Screw Mercedes for being a typical money grubbing corporation, sacrificing long term quality for their bottom line. They know most new G customers don't keep theirs long term. They keep them for a couple years, then sell them to guys like us and go buy themselves new ones. Mercedes serves those rich guys, not us. But like I said, why stress. Life is short.

Originally Posted by Surge

New model or old model, @farmdog ?

Originally Posted by JD101b

Fill the space behind the seal with rust-inhibiting grease or oil.

I discovered rust on the windscreen right before Covid hit. I filled the gap with WD40 corrosion inhibitor (used a long aerosol straw and inserted it behind the seal). I finally fixed the rust in November of 2021. During that time (nearly 2 years) the rust didn’t progress at all. The oil seeped into the corrosion and stopped it from continuing to form.

That’s your best bet right now - oil the hell out of the windscreen and every other known problem area. Makes a big difference.

Originally Posted by farmdog

Did the WD40 Corrosion Inhibitor affect your windshield seal at all? On the back of the can it says "avoid prolonged contact with rubber."

Originally Posted by azpaquin

Garage kep for the most part, I am 2nd owner. First owner kept it indoors.

Originally Posted by awwgood

was your truck under warranty when they gave you this money and repair?