RE: [Chrysler300] POR-15 Color for Bottom of 300L?

[Ryan Hill <ryan_hillc300@xxxxxxxxxxx>]

David, as you're probably aware, the factory primed and painted all of the body including the undercarriage. The undersides got very little paint and in most cases were undercoated with a rubberized coating to provide added protection from road debris, some level of rust-proofing, and to deaden sound (road noise) within the cabin. POR-15 is designed to 'P'aint 'O'ver 'R'ust and neutralize the corrosion where rust is present. I could be wrong but I would not be painting it over rubberized undercoating (assuming your car is undercoated), if for no other reason because it's really expensive and there are other methods that would work far better and cost you much less.
In my case, I used POR-15 on some of the suspension components etc. but used a much easier method of cleaning up the underbody. I had no rust issues on the body itself and the factory undercoating was in good shape in all areas. I cleaned the entire underside with 'Simple Green' and an array of scrub brushes to remove all the road grime then rinsed it all off with a pressure washer (at about 1000 psi). After cleaning, you can actually see the original primer and/or body color in areas where the undercoating wasn't applied. Once well dried, I masked off the underside of the rockers, the lower portions of the quarter panels, and anything else I didn't want to get any undercoating on. (Tin foil is a fantastic masking tool for fuel and brake lines etc.) In my case the entire suspension was off the car and it was jacked up a couple feet off the ground on a reliable set of jack stands. 
I sprayed some paint in body color on the bare areas that were not originally undercoated and showed the original color. I then followed up with a new coat of rubberized undercoating in a spray can form, covering all of the original undercoating and giving it a nice new look. If I were to do it again, I would probably look into using a spray-on or roll-on truck bed liner. Lizard Skin is one that comes to mind and the clean-up is painless.
One warning about POR-15, do not get it on your skin....unless you like the color so much you want to wear it. It's great for it's intended purpose but I think you might want to reconsider painting everything with it. Just my 2 cents....    

Ryan Hill 

To: Chrysler300@xxxxxxxxxxxxxxx
From: torquechap@xxxxxxxxx
Date: Mon, 20 Aug 2012 22:12:07 +0000
Subject: [Chrysler300] POR-15 Color for Bottom of 300L?
















 



  


    
      
      
      Esteemed Colleagues,

As the exhaust is currently off my 300L convt and awaiting replacement, I'm going to use the opportunity to personally undercoat the car. Going with POR-15 although it's going to be terribly messy LOL



Which closer is closer to the factory look as the car left the factory -- gloss black, semi-gloss black, silver or gray?



While the job will undoubtedly be a messy one, I'm sure it'll be worth it!



Best,



David Morrison

Basking Ridge, NJ



300K Ram Convt

300L Convt





    
     

    
    






   		 	   		  

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