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  #25  
Old 12-30-2015, 01:06 PM
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Re: undercoating your jeep

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Originally Posted by leadfoot4 View Post
I agree with the highlighted areas of your post. HOWEVER, going back to something I posted earlier, I use, and will continue to use, LPS3 to "rust proof" my vehicles. I rust proofed the 2005 GMC Canyon, that I traded in on my 2015 Grand Cherokee. Driven through 10 winters, and washed whenever possible, the GMC still looked really good at the time of the trade.

I replaced the speakers in my GC last month, and while I had the door panels off, to install the new speakers, I sprayed the inside of the doors with the LPS3. Having the speakers out, allowed for access to the inside of the doors. There are also "pop-out panels" that give you even more access. Yes, I was careful not to plug the drain holes, and I'm sure that my GC will still look good in 2015.....
I knew a guy when I lived in Chicago, (neighbor down the street), Who would save his used motor oil. (Back in the 70's before recycling was so commonplace). Then in the colder weather he would use a compressor to spray the under carriage of his cars with it. He had some kind of a long wand setup that would reach underneath. He also had a gravel driveway, so if it dripped a bit it didn't matter. He had pretty good success with his method. His cars were always rust free. (At least less rust than everyone else's). I've even heard of guys spraying melted Paraffin in much the same way.

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  #26  
Old 12-31-2015, 09:58 AM
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Re: undercoating your jeep

I did a search on "LPS3 rust prevent" and found a good review of that and similar products.

Test of Corrosion Inhibitor Sprays - The Hull Truth - Boating and Fishing Forum

He names three products that performed well on bare steel, with CRC Heavy Duty getting the nod for value.

The author also says that nothing is better than a good coat of paint. So I think the best approach is to periodically clean underneath, inspect for damage then spot treat with CRC or similar.
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  #27  
Old 12-31-2015, 10:21 AM
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Re: undercoating your jeep

Your better off cleaning the underside and painting it.

use the LPS3 or Fluid Film inside the interior panels like doors, rockers etc I have a flexible wand with a brass tipp which spray 360 degree pattern

Spraying these things on the underside,with these oily type fluids just makes a mess and it will have to be reapplied yearly.

Eastwoods has some some Hevy Duty Anti Rust, Mopar has something similar, both a waxy film you can spray. I painted the floors and wheel wells and suspension and then top coated with the HD Anti rust.

Bottom line is to do it right you really need to pull all the fender liners and get inside the wheel arches, remove the rear 1/4 trim and spray fluid film from the inside, flood the hatch, rockers, doors ,etc with the FluidFilm and paint everything else.
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  #28  
Old 01-03-2016, 12:01 PM
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Re: undercoating your jeep

If you're going to spray your vehicle with some type of rustproofing liquid, there is this test that was conducted for firearm users. Plain WD-40 scored very high.

http://www.brownells.com/.aspx/lid=1..._Preventatives
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  #29  
Old 01-03-2016, 09:42 PM
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Re: undercoating your jeep

Look at ACF-50 anti corrosive lubricant. I've used it now through a few Michigan winters and it does a nice job. I can do my wife's Sequoia with a few cans, a Wrangler Unlimited with two, I lay down some construction paper on the garage floor then go to town on the under carriage and under hood areas. Then let it drip off overnight. I go overboard but I hate rust.


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  #30  
Old 01-04-2016, 12:17 AM
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Re: undercoating your jeep

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Originally Posted by billt View Post
Another thing you have to be careful of in corrosive Winter climates, are these "quarter car washes". Many of them use reclaimed, filtered water. Several years back I had one by me that was enclosed in the freezing weather. Allowing you to pull in, wash off the road salt. Do a quick wipe dry, and leave. I tasted the "rinse water" once, and it has so much dissolved road salt in it, that it was saltier than the ocean!
Absolutely true. Here's the real corroding "agent" for us rust/salt belt folks. Even if you get a good layer of salt off at a car wash whatever is still on (plus the trip home ) will be turned into active corroding salt brine not long after you park it in your warm garage. The melting ice and snow moistens the air in the garage and around your undercarriage to a nice salt corrosion moisture/temp combo all the while you sleep. In regards to salt corrosion it is technically better to let your vehicle stay outside the garage and be colder and more frozen to keep the salt inactive (or much less so).

We encourage salt corrosion by parking in a garage.

Best real solution is wash, wash, wash that undercarriage (at the very, very least 1/week in winter). I also do the low ph shampoo and Corrosion X spray to entire underside just because I hate cake rust, a petina always happens.
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  #31  
Old 03-13-2016, 12:19 AM
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Re: undercoating your jeep

I've had aftermarket undercoating that didn't really seem to help. What I do now is once or twice a year when I'm servicing it is just roll around on a creeper and look for anything underneath that has had the paint chipped or scrapped and use a rust converter spray on it. Has worked for me so far.
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