Jump to content

Best Undercoating?

frenchsquared
 Share

Recommended Posts

Doublebase Enthusiast

Doublebase

Posted
Posted
21 hours ago, 1940ModelB said:

Word has it Fluid Film dissolves the wax coating GM uses on our frames and takes a bad situation and makes it worse.

Thanks, didn't know that.

  • Replies 46
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

NWI Denali
NWI Denali

Rule #1 about dealerships... do not believe anything a salesman says. They are beyons clueless about their own product they sell.

BlueSilvyZ71
BlueSilvyZ71

Krown, everyone out here in Atlantic Canada has that as their go-to.

Doublebase
Doublebase

Anyone ever try Fluid Film? Pretty popular in my area. It's a lanolin based product, you can buy it by the can or by the gallon. Just spray it right on. Works pretty good.

WesternMike Enthusiast

WesternMike

Posted
Posted

My frame is full of surface rust on my 2014 now.

I’m about to do a massive lift and want to strip and coat the frame finally.

How did you guys remove the surface rust? Just get under it with a wire wheel?

Brown4x4 Enthusiast

Brown4x4

Posted
Posted

I noticed that these trucks also have a sound deadening material that absorbs salt and moisture at the bottom of the front fender.  It's the area between where the front mud flap and front door seam would be.  You can see it if you open your door and look in the seam where your hinge is near the bottom.  I removed the mud flap and front wheel liner to access this spot and removed the sound deadening material. The material was soaking wet and could have made that area rust out.  I now keep the area soaked with Krown spray.

adamj2121 Enthusiast

adamj2121

Posted
Posted (edited)
3 hours ago, WesternMike said:

My frame is full of surface rust on my 2014 now.

I’m about to do a massive lift and want to strip and coat the frame finally.

How did you guys remove the surface rust? Just get under it with a wire wheel?

I did my truck before there was any surface rust. Let me say to begin with, stripping the factory wax off is one of the most annoying things I have ever done. I found the best way to get the wax off was to spray with a solvent, let it sit, and then use a pressure washer (preferably heated) to knock the wax off and repeat the process until all of the wax is gone. I used a mixture of diesel fuel and Purple Power cleaner as my solvent and it worked pretty well, the diesel really softens up the wax. 

 

As far as the areas that already have rust I would do one of 2 things depending on how bad it is. If it is very minor surface rust I would just spray it with a rust reformer. If it is really bad and rough I would sand it down with a wire wheel, sanding block, etc and then spray with a rust reformer (if rust is still visible).

Edited by adamj2121
dave07 Enthusiast

dave07

Posted
Posted
Thanks, didn't know that.


I have been using fluid film on my frame for about 2 years now. It didn’t dissolve the wax on my frame at all. However it doesn’t really hold up from the constant barrage of salt/anti skid which seems to blast it off easily.


Sent from my iPhone using Tapatalk
WesternMike Enthusiast

WesternMike

Posted
Posted
I did my truck before there was any surface rust. Let me say to begin with, stripping the factory wax off is one of the most annoying things I have ever done. I found the best way to get the wax off was to spray with a solvent, let it sit, and then use a pressure washer (preferably heated) to knock the wax off and repeat the process until all of the wax is gone. I used a mixture of diesel fuel and Purple Power cleaner as my solvent and it worked pretty well, the diesel really softens up the wax. 
 
As far as the areas that already have rust I would do one of 2 things depending on how bad it is. If it is very minor surface rust I would just spray it with a rust reformer. If it is really bad and rough I would sand it down with a wire wheel, sanding block, etc and then spray with a rust reformer (if rust is still visible).



The wax flaked entirely off within months. Was one of the problems with the first Gen of these trucks (2014). My truck was perfect besides this rust issue on the frame.

I don’t think it’s too bad so now that it’s getting warm up here in Alberta I may try to tackle this as soon as I get the 8” lift on; will be so much easier being under it after lifted haha
dave07 Enthusiast

dave07

Posted
Posted



The wax flaked entirely off within months. Was one of the problems with the first Gen of these trucks (2014). My truck was perfect besides this rust issue on the frame.

I don’t think it’s too bad so now that it’s getting warm up here in Alberta I may try to tackle this as soon as I get the 8” lift on; will be so much easier being under it after lifted haha

I wonder if the 2019s have the same wax on the frames?


Sent from my iPhone using Tapatalk
adamj2121 Enthusiast

adamj2121

Posted
Posted
1 minute ago, WesternMike said:

 

 


The wax flaked entirely off within months. Was one of the problems with the first Gen of these trucks (2014). My truck was perfect besides this rust issue on the frame.

I don’t think it’s too bad so now that it’s getting warm up here in Alberta I may try to tackle this as soon as I get the 8” lift on; will be so much easier being under it after lifted haha

 

 

The 8" lift will make it much easier. I have a 6" lift and I drove the truck up on some wood blocks I had laying around, so it was about 12" in the air and it was super easy.

adamj2121 Enthusiast

adamj2121

Posted
Posted
2 minutes ago, dave07 said:


I wonder if the 2019s have the same wax on the frames?


Sent from my iPhone using Tapatalk

It's hard to say, GM has been using the wax for so long I really doubt they will change. I think it would be beneficial for the consumer if they would switch. The e-coating that Ford uses seems to be pretty nice.

pickmeup Enthusiast

pickmeup

Posted
Posted
24 minutes ago, dave07 said:


I wonder if the 2019s have the same wax on the frames?


Sent from my iPhone using Tapatalk

Quite sure they stated they are going to continue the wax coating as they believe in it .

Doublebase Enthusiast

Doublebase

Posted
Posted
4 hours ago, dave07 said:


I wonder if the 2019s have the same wax on the frames?


Sent from my iPhone using Tapatalk

I don't know what's on the 2019's but the sales guy that sold me my 2018 last weekend said that the frames have a new undercoating on them for 2018. Don't know if that's true, doubt it seeing as how the guy didn't know what direct injection was or that the truck had electric steering. Pointed that out to him and he said no, it's got regular sterring. Asked him to point to the power steering pump and he pointed to the water pump.

 

But the frame does have a very tacky black coating on it...doesn't seem to be working as there already is rust in spots were the coating has rubbed off.

Doublebase Enthusiast

Doublebase

Posted
Posted
4 hours ago, dave07 said:

 


I have been using fluid film on my frame for about 2 years now. It didn’t dissolve the wax on my frame at all. However it doesn’t really hold up from the constant barrage of salt/anti skid which seems to blast it off easily.


Sent from my iPhone using Tapatalk

 

Yeah I haven't sprayed it over undercoating or anything - then again maybe I have - I just have used it on the pinch welds on my car right before winter starts. Seems to do ok, nothing special. I kind of look at it as a temporary solution that needs to be reapplied. I think most stuff will work temporarily...oil, penetration oil, rtv, grease, paint...but none of those is a long term set it and forget, fix.

 

I had a leaking oil pan on an Accord I used to own, that oil pan was probably the only thing that wasn't rusted on that car. 

 

There's always POR 15. But get any of that on you and it's never coming off, lol.

Donstar Senior Enthusiast

Donstar

Posted
Posted

My '15 does not appear to have any type of coating that could peel off and no signs of unusual amounts of rust.  Other than the obvious appearance issues,  has anyone experienced any functional issues related to rust on a newer vehicle?  Many years ago I had a '76 GMC 3/4 ton and my mechanic once showed me my floor mats from underneath the truck while up on a hoist.  I put a few pieces of plywood under the mats and kept on trucking!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      I had skimmed through that article when you posted the link and honestly I felt rather defeated in a sense and realized that all these years in changing oil that in fact putting in what I was told was a good quality oil was probably not filtered as well as it should be although the filter put on the engine would be what ( as long as it never went into bypass mode ) would be the final filtering of the new oil that the engine components would first see, but then the filtering media itself is not up to par to what is ideal because a full flow filter would be too restrictive to filter fine enough for the engines best outcome in the long run. Only one of our tractors over the years which was a Versatile with a 855 Cummins had a separate bypass filter, some engine manufacturers did spec a partial bypass system within the main oil filter but I don't believe any other trucks or equipment I was servicing used such a filter. No doubt a product like the Amsoil bypass system is of benefit as long as nothing goes sideways with the extra plumbing and filter such as a rupture/leak that could cause the oil to pump out of the engine ( yes that Versatile had a remote canister with hoses routed to it as well ). With the idiot egr system on a diesel and as a result forcing a lot more soot into the oil, that certainly isn't helping the diesel engines cause or as you pointed out the GDI engine issue with creating more soot and aside from having a fancy secondary filtering system, changing the oil more often helping lower the total soot load.     So oil manufacturing and the end product is not something one can control and I wonder if there are specs on what various oil packaging companies produce in particle count or size. As to the filtering, if the OEM is not designing a filter size and spec that is really what it could be, they too are short changing the end user and so what is the answer. Of course as you say the oil side can only do so much if the air side isn't keeping up its end of the picture and air filters are only so efficient and if in a dusty environment such as farm or construction or driving gravel roads there is a lot of dirt to filter out and some of that ends up into the air stream.    Of course the irony in places like where I am where they dump the salt on the highways but also will mix in some calcium or outright pure calcium for problem road area's, or using calcium as dust control on gravel roads, the vehicle that gets used in that environment may rust out before a properly engineered engine and maintenance finally wears out so one has to face that reality in the rust belt. 
    • GAMark
      Road Master Active Suspension

      By GAMark · Posted

      Has anyone run these on their 2500?
    • Erfar
      Oil Change

      By Erfar · Posted

      have you stuck with dealer oil changes since then? I made the same switch after getting tired of crawling around under the truck, but I’ve found some dealers are way better than others about getting you in quickly. Curious if yours has been good about scheduling or if you’ve had to look elsewhere for quicker turnaround.
    • cherryred21duramax
      Can anyone decode a VIN to determine if this truck has had emissions issues or a recall?

      By cherryred21duramax · Posted

      Thank you.   I am set on a 3.0 Duramax as my previous truck with a Ford Ecoboost had just as many, if not more, "common" issues.  Cam phasers, timing chain issues, 10-speed valve body and CDF drum, emissions issues, etc.  So I figured, why not get 2x the fuel mileage (these things got 27+mpg on every mixed city/highway test drive I put them through) and better towing capability with resale value to boot?   My minimum, shortest trip will be 50 miles 1-way and I regularly go out of state with a travel trailer.  I'm planning on using this for a marketing/event promotion business also, which would require regular towing of trailers for bands, DJs, sound and lighting gear, along with my personal camera gear for filming events.   Looked at other trucks in the $30k+ price range but the issues seem to be everywhere, plus too many with gaudy mods.  I'm literally sticking with RWD trucks because they tend to be actually used as trucks, vs. the 4x4 models I've seen with unsafe lifts, huge tires, and general mods that would affect reliability (I'm wondering if some of them were tuned, hence the aggressive throttle response and hard shifting).   So my goal is to find a stock, 3.0 with 1 or 2 owners, in good physical condition, and decently well maintained.  Can't seem to find that up here, everything in the $27-30k range has had multiple owners, smoke smell, issues, or body damage.  Or the ridiculously modified trucks with 80k miles for under $27k but lots of problems...
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      That’s pretty tough Grumpy. I reread the previous few posts. They all reference oil changes. Much like your last thread. In my humble opinion it keeps things interesting.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...