2nd Gen Non-Engine/Transmission Undercarriage care

[Fordiesel69]

I bought a 99' police interceptor crown vic and it was from harrisburg. It was the street appearance model not used in pursuits with absolutly a rust free undercarriage. I ended up using rust bullet on it and just spraypainted the frame every year. Of course now the frame has some surface rust, as well as the exhaust, but every year I just do it again. POR 15 or Rustbullet will certainly make it last far longer, but NOTHING will stop rust 100%.



Another way which is not popular, is oil and a dirt road. Nothing works better, cheaper. I would use the blackest, dirtiest diesel oil you can find and spray it on. Then drive on a dirt road. Instant red neck undercoating!!!:-laf All joking aside, my dad had new oil sprayed on his van, and it is not messy like you would think as did help slow the rusting over this winter.

 

[Glen Pratt]

I'm faced with the same situation. For rust removal I'm thinking about trying this product: For great rust removal Safest Rust Remover . This is the ink to their restorations page. Pretty impressive.
For paint I'm probably going with Chassis Saver High Build Jet Black chassis paint. Here's the link: Paint Over Rust to Stop Rust Permanently With Chassis Saver Truck & Auto Underbody Coating . The company is local to me. It's supposed to be better than POR-15.

 

[SRath]

I have used some POR-15 products with great success, but the regular POR-15 is not durable on hitches, axles, and other parts exposed to gravel roads.



That bedliner coating would be the ultimate, I think.



For simple, effective, durable rustproofing, do a search here on TDR on the benefits of applying Fluid Film. Many happy customers on this website and their own website is very impressive, too. I plan to try it this spring.



Until then, it's off to the carwash for me any time the temp gets above 32* and spend $20 while getting soaking, sloppy wet focusing on the underside...



I plow snow with my truck and it can really get packed into the undercarriage and the road salt/deicer stuff is really nasty for any metal. The POR-15 just hasn't held up for me. I have better luck with Marhyde paintable rubberized undercoating. You need a hammer and chisel to get it off. It won't come off your hands for days or weeks and your clothes are history, so dress accordingly.



Counter Act electronic corrosion control is now on my truck, too. Only time will tell how well it helps.