Removing rust/undercoating

[steveo2155]

Looking to clean up frame and undercoat 05 Silverado. Not going to remove bed or anything just going to work on this as time permits. What is the best way to go about this and what product do you recommend?

[Bruce Engelsman]

Clean underneath with power washer,buy a quart of Por 15,an assortment of foam brushes and wear protective clothing,and paint away. Por 15 is a great product.

[steveo2155]

Is there any need to wire wheel away the rust or is por 15 designed to just paint over?

[kstruckcountry]

You will get best results if you wire wheel. Easiest way is to pull off the bed, wash, wire wheel, and then paint. Pulling the bed makes access easier and the rear of the frame will likely need the most attention anyway.

 

POR15 is awesome stuff.

Edited July 22, 2019 by kstruckcountry

[CamGTP]

Go to town with a wire wheel on a grinder or die grinder, it's a good idea to take off any scale.

 

Then go over with a product like POR15 or similar.

[davester]

Don't expect doing something like this to really help, unless you do a virtually perfect job.  Places where you don't get the por15 will rust, and it works under the por15 from those spots.

 

I would suggest regularly spraying the underside with something like Fluid Film, or even used motor oil.  Messy, but fairly effective at keeping rust at bay...

[riverbanks]

There is also rust proof m/d from Napa,and chassis saver from Auto body stores,I used the chassis saver,great product

[steveo2155]

Did you remove bed or just paint what you could get to?

[riverbanks]

I removed bed,2 reasons,1,proper job,plus standing up,lol,2,my gas tank straps looked so poor,I figured,get it nice for next fuel pump change,I previously tried to change straps,I broke the weld on frame nut,it spun, couldn't get at it

[riverbanks]

So you didn't reply with"how poor were they",so,they were so poor,when I drove thru a coin drop,they gave me money

[Kjdad]

I'm a firm believer in Fluid Film.  My truck came from road salt heaven (Canada).  It was Fluid Filmed early in it's life.  9 years later and only have minor surface rust.  Heavier rust in the spots where the fluid film washed off.  I'm going to reapply before winter hits.

[Dusty734]

Will it work on my 2013 Sierra 1500 ?

[davester]

You may need a small tub of JB Weld for that...

[Kjdad]

Goop enough crap on that..out of sight..out of mind..ha   Reminds me of my old XJ jeep.  It about broke in half when I took it wheeling.  

[XJ2.5]

If you want something that looks nice, you can get woolwax or nh oil undercoating with a black tint. Similar to fluid film but they dont wash off as easily

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